xref: /openbmc/qemu/hw/audio/ac97.c (revision ab1b2ba9)
1 /*
2  * Copyright (C) 2006 InnoTek Systemberatung GmbH
3  *
4  * This file is part of VirtualBox Open Source Edition (OSE), as
5  * available from http://www.virtualbox.org. This file is free software;
6  * you can redistribute it and/or modify it under the terms of the GNU
7  * General Public License as published by the Free Software Foundation,
8  * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
9  * distribution. VirtualBox OSE is distributed in the hope that it will
10  * be useful, but WITHOUT ANY WARRANTY of any kind.
11  *
12  * If you received this file as part of a commercial VirtualBox
13  * distribution, then only the terms of your commercial VirtualBox
14  * license agreement apply instead of the previous paragraph.
15  *
16  * Contributions after 2012-01-13 are licensed under the terms of the
17  * GNU GPL, version 2 or (at your option) any later version.
18  */
19 
20 #include "qemu/osdep.h"
21 #include "hw/audio/soundhw.h"
22 #include "audio/audio.h"
23 #include "hw/pci/pci.h"
24 #include "hw/qdev-properties.h"
25 #include "migration/vmstate.h"
26 #include "qemu/module.h"
27 #include "sysemu/dma.h"
28 #include "qom/object.h"
29 
30 enum {
31     AC97_Reset                     = 0x00,
32     AC97_Master_Volume_Mute        = 0x02,
33     AC97_Headphone_Volume_Mute     = 0x04,
34     AC97_Master_Volume_Mono_Mute   = 0x06,
35     AC97_Master_Tone_RL            = 0x08,
36     AC97_PC_BEEP_Volume_Mute       = 0x0A,
37     AC97_Phone_Volume_Mute         = 0x0C,
38     AC97_Mic_Volume_Mute           = 0x0E,
39     AC97_Line_In_Volume_Mute       = 0x10,
40     AC97_CD_Volume_Mute            = 0x12,
41     AC97_Video_Volume_Mute         = 0x14,
42     AC97_Aux_Volume_Mute           = 0x16,
43     AC97_PCM_Out_Volume_Mute       = 0x18,
44     AC97_Record_Select             = 0x1A,
45     AC97_Record_Gain_Mute          = 0x1C,
46     AC97_Record_Gain_Mic_Mute      = 0x1E,
47     AC97_General_Purpose           = 0x20,
48     AC97_3D_Control                = 0x22,
49     AC97_AC_97_RESERVED            = 0x24,
50     AC97_Powerdown_Ctrl_Stat       = 0x26,
51     AC97_Extended_Audio_ID         = 0x28,
52     AC97_Extended_Audio_Ctrl_Stat  = 0x2A,
53     AC97_PCM_Front_DAC_Rate        = 0x2C,
54     AC97_PCM_Surround_DAC_Rate     = 0x2E,
55     AC97_PCM_LFE_DAC_Rate          = 0x30,
56     AC97_PCM_LR_ADC_Rate           = 0x32,
57     AC97_MIC_ADC_Rate              = 0x34,
58     AC97_6Ch_Vol_C_LFE_Mute        = 0x36,
59     AC97_6Ch_Vol_L_R_Surround_Mute = 0x38,
60     AC97_Vendor_Reserved           = 0x58,
61     AC97_Sigmatel_Analog           = 0x6c, /* We emulate a Sigmatel codec */
62     AC97_Sigmatel_Dac2Invert       = 0x6e, /* We emulate a Sigmatel codec */
63     AC97_Vendor_ID1                = 0x7c,
64     AC97_Vendor_ID2                = 0x7e
65 };
66 
67 #define SOFT_VOLUME
68 #define SR_FIFOE 16             /* rwc */
69 #define SR_BCIS  8              /* rwc */
70 #define SR_LVBCI 4              /* rwc */
71 #define SR_CELV  2              /* ro */
72 #define SR_DCH   1              /* ro */
73 #define SR_VALID_MASK ((1 << 5) - 1)
74 #define SR_WCLEAR_MASK (SR_FIFOE | SR_BCIS | SR_LVBCI)
75 #define SR_RO_MASK (SR_DCH | SR_CELV)
76 #define SR_INT_MASK (SR_FIFOE | SR_BCIS | SR_LVBCI)
77 
78 #define CR_IOCE  16             /* rw */
79 #define CR_FEIE  8              /* rw */
80 #define CR_LVBIE 4              /* rw */
81 #define CR_RR    2              /* rw */
82 #define CR_RPBM  1              /* rw */
83 #define CR_VALID_MASK ((1 << 5) - 1)
84 #define CR_DONT_CLEAR_MASK (CR_IOCE | CR_FEIE | CR_LVBIE)
85 
86 #define GC_WR    4              /* rw */
87 #define GC_CR    2              /* rw */
88 #define GC_VALID_MASK ((1 << 6) - 1)
89 
90 #define GS_MD3   (1 << 17)      /* rw */
91 #define GS_AD3   (1 << 16)      /* rw */
92 #define GS_RCS   (1 << 15)      /* rwc */
93 #define GS_B3S12 (1 << 14)      /* ro */
94 #define GS_B2S12 (1 << 13)      /* ro */
95 #define GS_B1S12 (1 << 12)      /* ro */
96 #define GS_S1R1  (1 << 11)      /* rwc */
97 #define GS_S0R1  (1 << 10)      /* rwc */
98 #define GS_S1CR  (1 << 9)       /* ro */
99 #define GS_S0CR  (1 << 8)       /* ro */
100 #define GS_MINT  (1 << 7)       /* ro */
101 #define GS_POINT (1 << 6)       /* ro */
102 #define GS_PIINT (1 << 5)       /* ro */
103 #define GS_RSRVD ((1 << 4) | (1 << 3))
104 #define GS_MOINT (1 << 2)       /* ro */
105 #define GS_MIINT (1 << 1)       /* ro */
106 #define GS_GSCI  1              /* rwc */
107 #define GS_RO_MASK (GS_B3S12 | \
108                     GS_B2S12 | \
109                     GS_B1S12 | \
110                     GS_S1CR  | \
111                     GS_S0CR  | \
112                     GS_MINT  | \
113                     GS_POINT | \
114                     GS_PIINT | \
115                     GS_RSRVD | \
116                     GS_MOINT | \
117                     GS_MIINT)
118 #define GS_VALID_MASK ((1 << 18) - 1)
119 #define GS_WCLEAR_MASK (GS_RCS | GS_S1R1 | GS_S0R1 | GS_GSCI)
120 
121 #define BD_IOC (1 << 31)
122 #define BD_BUP (1 << 30)
123 
124 #define EACS_VRA 1
125 #define EACS_VRM 8
126 
127 #define MUTE_SHIFT 15
128 
129 #define TYPE_AC97 "AC97"
130 OBJECT_DECLARE_SIMPLE_TYPE(AC97LinkState, AC97)
131 
132 #define REC_MASK 7
133 enum {
134     REC_MIC = 0,
135     REC_CD,
136     REC_VIDEO,
137     REC_AUX,
138     REC_LINE_IN,
139     REC_STEREO_MIX,
140     REC_MONO_MIX,
141     REC_PHONE
142 };
143 
144 typedef struct BD {
145     uint32_t addr;
146     uint32_t ctl_len;
147 } BD;
148 
149 typedef struct AC97BusMasterRegs {
150     uint32_t bdbar;             /* rw 0 */
151     uint8_t civ;                /* ro 0 */
152     uint8_t lvi;                /* rw 0 */
153     uint16_t sr;                /* rw 1 */
154     uint16_t picb;              /* ro 0 */
155     uint8_t piv;                /* ro 0 */
156     uint8_t cr;                 /* rw 0 */
157     unsigned int bd_valid;
158     BD bd;
159 } AC97BusMasterRegs;
160 
161 struct AC97LinkState {
162     PCIDevice dev;
163     QEMUSoundCard card;
164     uint32_t glob_cnt;
165     uint32_t glob_sta;
166     uint32_t cas;
167     uint32_t last_samp;
168     AC97BusMasterRegs bm_regs[3];
169     uint8_t mixer_data[256];
170     SWVoiceIn *voice_pi;
171     SWVoiceOut *voice_po;
172     SWVoiceIn *voice_mc;
173     int invalid_freq[3];
174     uint8_t silence[128];
175     int bup_flag;
176     MemoryRegion io_nam;
177     MemoryRegion io_nabm;
178 };
179 
180 enum {
181     BUP_SET = 1,
182     BUP_LAST = 2
183 };
184 
185 #ifdef DEBUG_AC97
186 #define dolog(...) AUD_log("ac97", __VA_ARGS__)
187 #else
188 #define dolog(...)
189 #endif
190 
191 #define MKREGS(prefix, start)                   \
192 enum {                                          \
193     prefix ## _BDBAR = start,                   \
194     prefix ## _CIV = start + 4,                 \
195     prefix ## _LVI = start + 5,                 \
196     prefix ## _SR = start + 6,                  \
197     prefix ## _PICB = start + 8,                \
198     prefix ## _PIV = start + 10,                \
199     prefix ## _CR = start + 11                  \
200 }
201 
202 enum {
203     PI_INDEX = 0,
204     PO_INDEX,
205     MC_INDEX,
206     LAST_INDEX
207 };
208 
209 MKREGS(PI, PI_INDEX * 16);
210 MKREGS(PO, PO_INDEX * 16);
211 MKREGS(MC, MC_INDEX * 16);
212 
213 enum {
214     GLOB_CNT = 0x2c,
215     GLOB_STA = 0x30,
216     CAS      = 0x34
217 };
218 
219 #define GET_BM(index) (((index) >> 4) & 3)
220 
221 static void po_callback(void *opaque, int free);
222 static void pi_callback(void *opaque, int avail);
223 static void mc_callback(void *opaque, int avail);
224 
225 static void fetch_bd(AC97LinkState *s, AC97BusMasterRegs *r)
226 {
227     uint8_t b[8];
228 
229     pci_dma_read(&s->dev, r->bdbar + r->civ * 8, b, 8);
230     r->bd_valid = 1;
231     r->bd.addr = le32_to_cpu(*(uint32_t *) &b[0]) & ~3;
232     r->bd.ctl_len = le32_to_cpu(*(uint32_t *) &b[4]);
233     r->picb = r->bd.ctl_len & 0xffff;
234     dolog("bd %2d addr=0x%x ctl=0x%06x len=0x%x(%d bytes)\n",
235           r->civ, r->bd.addr, r->bd.ctl_len >> 16,
236           r->bd.ctl_len & 0xffff, (r->bd.ctl_len & 0xffff) << 1);
237 }
238 
239 static void update_sr(AC97LinkState *s, AC97BusMasterRegs *r, uint32_t new_sr)
240 {
241     int event = 0;
242     int level = 0;
243     uint32_t new_mask = new_sr & SR_INT_MASK;
244     uint32_t old_mask = r->sr & SR_INT_MASK;
245     uint32_t masks[] = {GS_PIINT, GS_POINT, GS_MINT};
246 
247     if (new_mask ^ old_mask) {
248         /** @todo is IRQ deasserted when only one of status bits is cleared? */
249         if (!new_mask) {
250             event = 1;
251             level = 0;
252         } else {
253             if ((new_mask & SR_LVBCI) && (r->cr & CR_LVBIE)) {
254                 event = 1;
255                 level = 1;
256             }
257             if ((new_mask & SR_BCIS) && (r->cr & CR_IOCE)) {
258                 event = 1;
259                 level = 1;
260             }
261         }
262     }
263 
264     r->sr = new_sr;
265 
266     dolog("IOC%d LVB%d sr=0x%x event=%d level=%d\n",
267           r->sr & SR_BCIS, r->sr & SR_LVBCI, r->sr, event, level);
268 
269     if (!event) {
270         return;
271     }
272 
273     if (level) {
274         s->glob_sta |= masks[r - s->bm_regs];
275         dolog("set irq level=1\n");
276         pci_irq_assert(&s->dev);
277     } else {
278         s->glob_sta &= ~masks[r - s->bm_regs];
279         dolog("set irq level=0\n");
280         pci_irq_deassert(&s->dev);
281     }
282 }
283 
284 static void voice_set_active(AC97LinkState *s, int bm_index, int on)
285 {
286     switch (bm_index) {
287     case PI_INDEX:
288         AUD_set_active_in(s->voice_pi, on);
289         break;
290 
291     case PO_INDEX:
292         AUD_set_active_out(s->voice_po, on);
293         break;
294 
295     case MC_INDEX:
296         AUD_set_active_in(s->voice_mc, on);
297         break;
298 
299     default:
300         AUD_log("ac97", "invalid bm_index(%d) in voice_set_active", bm_index);
301         break;
302     }
303 }
304 
305 static void reset_bm_regs(AC97LinkState *s, AC97BusMasterRegs *r)
306 {
307     dolog("reset_bm_regs\n");
308     r->bdbar = 0;
309     r->civ = 0;
310     r->lvi = 0;
311     /** todo do we need to do that? */
312     update_sr(s, r, SR_DCH);
313     r->picb = 0;
314     r->piv = 0;
315     r->cr = r->cr & CR_DONT_CLEAR_MASK;
316     r->bd_valid = 0;
317 
318     voice_set_active(s, r - s->bm_regs, 0);
319     memset(s->silence, 0, sizeof(s->silence));
320 }
321 
322 static void mixer_store(AC97LinkState *s, uint32_t i, uint16_t v)
323 {
324     if (i + 2 > sizeof(s->mixer_data)) {
325         dolog("mixer_store: index %d out of bounds %zd\n",
326               i, sizeof(s->mixer_data));
327         return;
328     }
329 
330     s->mixer_data[i + 0] = v & 0xff;
331     s->mixer_data[i + 1] = v >> 8;
332 }
333 
334 static uint16_t mixer_load(AC97LinkState *s, uint32_t i)
335 {
336     uint16_t val = 0xffff;
337 
338     if (i + 2 > sizeof(s->mixer_data)) {
339         dolog("mixer_load: index %d out of bounds %zd\n",
340               i, sizeof(s->mixer_data));
341     } else {
342         val = s->mixer_data[i + 0] | (s->mixer_data[i + 1] << 8);
343     }
344 
345     return val;
346 }
347 
348 static void open_voice(AC97LinkState *s, int index, int freq)
349 {
350     struct audsettings as;
351 
352     as.freq = freq;
353     as.nchannels = 2;
354     as.fmt = AUDIO_FORMAT_S16;
355     as.endianness = 0;
356 
357     if (freq > 0) {
358         s->invalid_freq[index] = 0;
359         switch (index) {
360         case PI_INDEX:
361             s->voice_pi = AUD_open_in(
362                 &s->card,
363                 s->voice_pi,
364                 "ac97.pi",
365                 s,
366                 pi_callback,
367                 &as
368                 );
369             break;
370 
371         case PO_INDEX:
372             s->voice_po = AUD_open_out(
373                 &s->card,
374                 s->voice_po,
375                 "ac97.po",
376                 s,
377                 po_callback,
378                 &as
379                 );
380             break;
381 
382         case MC_INDEX:
383             s->voice_mc = AUD_open_in(
384                 &s->card,
385                 s->voice_mc,
386                 "ac97.mc",
387                 s,
388                 mc_callback,
389                 &as
390                 );
391             break;
392         }
393     } else {
394         s->invalid_freq[index] = freq;
395         switch (index) {
396         case PI_INDEX:
397             AUD_close_in(&s->card, s->voice_pi);
398             s->voice_pi = NULL;
399             break;
400 
401         case PO_INDEX:
402             AUD_close_out(&s->card, s->voice_po);
403             s->voice_po = NULL;
404             break;
405 
406         case MC_INDEX:
407             AUD_close_in(&s->card, s->voice_mc);
408             s->voice_mc = NULL;
409             break;
410         }
411     }
412 }
413 
414 static void reset_voices(AC97LinkState *s, uint8_t active[LAST_INDEX])
415 {
416     uint16_t freq;
417 
418     freq = mixer_load(s, AC97_PCM_LR_ADC_Rate);
419     open_voice(s, PI_INDEX, freq);
420     AUD_set_active_in(s->voice_pi, active[PI_INDEX]);
421 
422     freq = mixer_load(s, AC97_PCM_Front_DAC_Rate);
423     open_voice(s, PO_INDEX, freq);
424     AUD_set_active_out(s->voice_po, active[PO_INDEX]);
425 
426     freq = mixer_load(s, AC97_MIC_ADC_Rate);
427     open_voice(s, MC_INDEX, freq);
428     AUD_set_active_in(s->voice_mc, active[MC_INDEX]);
429 }
430 
431 static void get_volume(uint16_t vol, uint16_t mask, int inverse,
432                        int *mute, uint8_t *lvol, uint8_t *rvol)
433 {
434     *mute = (vol >> MUTE_SHIFT) & 1;
435     *rvol = (255 * (vol & mask)) / mask;
436     *lvol = (255 * ((vol >> 8) & mask)) / mask;
437 
438     if (inverse) {
439         *rvol = 255 - *rvol;
440         *lvol = 255 - *lvol;
441     }
442 }
443 
444 static void update_combined_volume_out(AC97LinkState *s)
445 {
446     uint8_t lvol, rvol, plvol, prvol;
447     int mute, pmute;
448 
449     get_volume(mixer_load(s, AC97_Master_Volume_Mute), 0x3f, 1,
450                &mute, &lvol, &rvol);
451     get_volume(mixer_load(s, AC97_PCM_Out_Volume_Mute), 0x1f, 1,
452                &pmute, &plvol, &prvol);
453 
454     mute = mute | pmute;
455     lvol = (lvol * plvol) / 255;
456     rvol = (rvol * prvol) / 255;
457 
458     AUD_set_volume_out(s->voice_po, mute, lvol, rvol);
459 }
460 
461 static void update_volume_in(AC97LinkState *s)
462 {
463     uint8_t lvol, rvol;
464     int mute;
465 
466     get_volume(mixer_load(s, AC97_Record_Gain_Mute), 0x0f, 0,
467                &mute, &lvol, &rvol);
468 
469     AUD_set_volume_in(s->voice_pi, mute, lvol, rvol);
470 }
471 
472 static void set_volume(AC97LinkState *s, int index, uint32_t val)
473 {
474     switch (index) {
475     case AC97_Master_Volume_Mute:
476         val &= 0xbf3f;
477         mixer_store(s, index, val);
478         update_combined_volume_out(s);
479         break;
480     case AC97_PCM_Out_Volume_Mute:
481         val &= 0x9f1f;
482         mixer_store(s, index, val);
483         update_combined_volume_out(s);
484         break;
485     case AC97_Record_Gain_Mute:
486         val &= 0x8f0f;
487         mixer_store(s, index, val);
488         update_volume_in(s);
489         break;
490     }
491 }
492 
493 static void record_select(AC97LinkState *s, uint32_t val)
494 {
495     uint8_t rs = val & REC_MASK;
496     uint8_t ls = (val >> 8) & REC_MASK;
497     mixer_store(s, AC97_Record_Select, rs | (ls << 8));
498 }
499 
500 static void mixer_reset(AC97LinkState *s)
501 {
502     uint8_t active[LAST_INDEX];
503 
504     dolog("mixer_reset\n");
505     memset(s->mixer_data, 0, sizeof(s->mixer_data));
506     memset(active, 0, sizeof(active));
507     mixer_store(s, AC97_Reset, 0x0000); /* 6940 */
508     mixer_store(s, AC97_Headphone_Volume_Mute, 0x0000);
509     mixer_store(s, AC97_Master_Volume_Mono_Mute, 0x0000);
510     mixer_store(s, AC97_Master_Tone_RL, 0x0000);
511     mixer_store(s, AC97_PC_BEEP_Volume_Mute, 0x0000);
512     mixer_store(s, AC97_Phone_Volume_Mute, 0x0000);
513     mixer_store(s, AC97_Mic_Volume_Mute, 0x0000);
514     mixer_store(s, AC97_Line_In_Volume_Mute, 0x0000);
515     mixer_store(s, AC97_CD_Volume_Mute, 0x0000);
516     mixer_store(s, AC97_Video_Volume_Mute, 0x0000);
517     mixer_store(s, AC97_Aux_Volume_Mute, 0x0000);
518     mixer_store(s, AC97_Record_Gain_Mic_Mute, 0x0000);
519     mixer_store(s, AC97_General_Purpose, 0x0000);
520     mixer_store(s, AC97_3D_Control, 0x0000);
521     mixer_store(s, AC97_Powerdown_Ctrl_Stat, 0x000f);
522 
523     /*
524      * Sigmatel 9700 (STAC9700)
525      */
526     mixer_store(s, AC97_Vendor_ID1, 0x8384);
527     mixer_store(s, AC97_Vendor_ID2, 0x7600); /* 7608 */
528 
529     mixer_store(s, AC97_Extended_Audio_ID, 0x0809);
530     mixer_store(s, AC97_Extended_Audio_Ctrl_Stat, 0x0009);
531     mixer_store(s, AC97_PCM_Front_DAC_Rate, 0xbb80);
532     mixer_store(s, AC97_PCM_Surround_DAC_Rate, 0xbb80);
533     mixer_store(s, AC97_PCM_LFE_DAC_Rate, 0xbb80);
534     mixer_store(s, AC97_PCM_LR_ADC_Rate, 0xbb80);
535     mixer_store(s, AC97_MIC_ADC_Rate, 0xbb80);
536 
537     record_select(s, 0);
538     set_volume(s, AC97_Master_Volume_Mute, 0x8000);
539     set_volume(s, AC97_PCM_Out_Volume_Mute, 0x8808);
540     set_volume(s, AC97_Record_Gain_Mute, 0x8808);
541 
542     reset_voices(s, active);
543 }
544 
545 /**
546  * Native audio mixer
547  * I/O Reads
548  */
549 static uint32_t nam_readb(void *opaque, uint32_t addr)
550 {
551     AC97LinkState *s = opaque;
552     dolog("U nam readb 0x%x\n", addr);
553     s->cas = 0;
554     return ~0U;
555 }
556 
557 static uint32_t nam_readw(void *opaque, uint32_t addr)
558 {
559     AC97LinkState *s = opaque;
560     s->cas = 0;
561     return mixer_load(s, addr);
562 }
563 
564 static uint32_t nam_readl(void *opaque, uint32_t addr)
565 {
566     AC97LinkState *s = opaque;
567     dolog("U nam readl 0x%x\n", addr);
568     s->cas = 0;
569     return ~0U;
570 }
571 
572 /**
573  * Native audio mixer
574  * I/O Writes
575  */
576 static void nam_writeb(void *opaque, uint32_t addr, uint32_t val)
577 {
578     AC97LinkState *s = opaque;
579     dolog("U nam writeb 0x%x <- 0x%x\n", addr, val);
580     s->cas = 0;
581 }
582 
583 static void nam_writew(void *opaque, uint32_t addr, uint32_t val)
584 {
585     AC97LinkState *s = opaque;
586 
587     s->cas = 0;
588     switch (addr) {
589     case AC97_Reset:
590         mixer_reset(s);
591         break;
592     case AC97_Powerdown_Ctrl_Stat:
593         val &= ~0x800f;
594         val |= mixer_load(s, addr) & 0xf;
595         mixer_store(s, addr, val);
596         break;
597     case AC97_PCM_Out_Volume_Mute:
598     case AC97_Master_Volume_Mute:
599     case AC97_Record_Gain_Mute:
600         set_volume(s, addr, val);
601         break;
602     case AC97_Record_Select:
603         record_select(s, val);
604         break;
605     case AC97_Vendor_ID1:
606     case AC97_Vendor_ID2:
607         dolog("Attempt to write vendor ID to 0x%x\n", val);
608         break;
609     case AC97_Extended_Audio_ID:
610         dolog("Attempt to write extended audio ID to 0x%x\n", val);
611         break;
612     case AC97_Extended_Audio_Ctrl_Stat:
613         if (!(val & EACS_VRA)) {
614             mixer_store(s, AC97_PCM_Front_DAC_Rate, 0xbb80);
615             mixer_store(s, AC97_PCM_LR_ADC_Rate,    0xbb80);
616             open_voice(s, PI_INDEX, 48000);
617             open_voice(s, PO_INDEX, 48000);
618         }
619         if (!(val & EACS_VRM)) {
620             mixer_store(s, AC97_MIC_ADC_Rate, 0xbb80);
621             open_voice(s, MC_INDEX, 48000);
622         }
623         dolog("Setting extended audio control to 0x%x\n", val);
624         mixer_store(s, AC97_Extended_Audio_Ctrl_Stat, val);
625         break;
626     case AC97_PCM_Front_DAC_Rate:
627         if (mixer_load(s, AC97_Extended_Audio_Ctrl_Stat) & EACS_VRA) {
628             mixer_store(s, addr, val);
629             dolog("Set front DAC rate to %d\n", val);
630             open_voice(s, PO_INDEX, val);
631         } else {
632             dolog("Attempt to set front DAC rate to %d, but VRA is not set\n",
633                   val);
634         }
635         break;
636     case AC97_MIC_ADC_Rate:
637         if (mixer_load(s, AC97_Extended_Audio_Ctrl_Stat) & EACS_VRM) {
638             mixer_store(s, addr, val);
639             dolog("Set MIC ADC rate to %d\n", val);
640             open_voice(s, MC_INDEX, val);
641         } else {
642             dolog("Attempt to set MIC ADC rate to %d, but VRM is not set\n",
643                   val);
644         }
645         break;
646     case AC97_PCM_LR_ADC_Rate:
647         if (mixer_load(s, AC97_Extended_Audio_Ctrl_Stat) & EACS_VRA) {
648             mixer_store(s, addr, val);
649             dolog("Set front LR ADC rate to %d\n", val);
650             open_voice(s, PI_INDEX, val);
651         } else {
652             dolog("Attempt to set LR ADC rate to %d, but VRA is not set\n",
653                   val);
654         }
655         break;
656     case AC97_Headphone_Volume_Mute:
657     case AC97_Master_Volume_Mono_Mute:
658     case AC97_Master_Tone_RL:
659     case AC97_PC_BEEP_Volume_Mute:
660     case AC97_Phone_Volume_Mute:
661     case AC97_Mic_Volume_Mute:
662     case AC97_Line_In_Volume_Mute:
663     case AC97_CD_Volume_Mute:
664     case AC97_Video_Volume_Mute:
665     case AC97_Aux_Volume_Mute:
666     case AC97_Record_Gain_Mic_Mute:
667     case AC97_General_Purpose:
668     case AC97_3D_Control:
669     case AC97_Sigmatel_Analog:
670     case AC97_Sigmatel_Dac2Invert:
671         /* None of the features in these regs are emulated, so they are RO */
672         break;
673     default:
674         dolog("U nam writew 0x%x <- 0x%x\n", addr, val);
675         mixer_store(s, addr, val);
676         break;
677     }
678 }
679 
680 static void nam_writel(void *opaque, uint32_t addr, uint32_t val)
681 {
682     AC97LinkState *s = opaque;
683     dolog("U nam writel 0x%x <- 0x%x\n", addr, val);
684     s->cas = 0;
685 }
686 
687 /**
688  * Native audio bus master
689  * I/O Reads
690  */
691 static uint32_t nabm_readb(void *opaque, uint32_t addr)
692 {
693     AC97LinkState *s = opaque;
694     AC97BusMasterRegs *r = NULL;
695     uint32_t val = ~0U;
696 
697     switch (addr) {
698     case CAS:
699         dolog("CAS %d\n", s->cas);
700         val = s->cas;
701         s->cas = 1;
702         break;
703     case PI_CIV:
704     case PO_CIV:
705     case MC_CIV:
706         r = &s->bm_regs[GET_BM(addr)];
707         val = r->civ;
708         dolog("CIV[%d] -> 0x%x\n", GET_BM(addr), val);
709         break;
710     case PI_LVI:
711     case PO_LVI:
712     case MC_LVI:
713         r = &s->bm_regs[GET_BM(addr)];
714         val = r->lvi;
715         dolog("LVI[%d] -> 0x%x\n", GET_BM(addr), val);
716         break;
717     case PI_PIV:
718     case PO_PIV:
719     case MC_PIV:
720         r = &s->bm_regs[GET_BM(addr)];
721         val = r->piv;
722         dolog("PIV[%d] -> 0x%x\n", GET_BM(addr), val);
723         break;
724     case PI_CR:
725     case PO_CR:
726     case MC_CR:
727         r = &s->bm_regs[GET_BM(addr)];
728         val = r->cr;
729         dolog("CR[%d] -> 0x%x\n", GET_BM(addr), val);
730         break;
731     case PI_SR:
732     case PO_SR:
733     case MC_SR:
734         r = &s->bm_regs[GET_BM(addr)];
735         val = r->sr & 0xff;
736         dolog("SRb[%d] -> 0x%x\n", GET_BM(addr), val);
737         break;
738     default:
739         dolog("U nabm readb 0x%x -> 0x%x\n", addr, val);
740         break;
741     }
742     return val;
743 }
744 
745 static uint32_t nabm_readw(void *opaque, uint32_t addr)
746 {
747     AC97LinkState *s = opaque;
748     AC97BusMasterRegs *r = NULL;
749     uint32_t val = ~0U;
750 
751     switch (addr) {
752     case PI_SR:
753     case PO_SR:
754     case MC_SR:
755         r = &s->bm_regs[GET_BM(addr)];
756         val = r->sr;
757         dolog("SR[%d] -> 0x%x\n", GET_BM(addr), val);
758         break;
759     case PI_PICB:
760     case PO_PICB:
761     case MC_PICB:
762         r = &s->bm_regs[GET_BM(addr)];
763         val = r->picb;
764         dolog("PICB[%d] -> 0x%x\n", GET_BM(addr), val);
765         break;
766     default:
767         dolog("U nabm readw 0x%x -> 0x%x\n", addr, val);
768         break;
769     }
770     return val;
771 }
772 
773 static uint32_t nabm_readl(void *opaque, uint32_t addr)
774 {
775     AC97LinkState *s = opaque;
776     AC97BusMasterRegs *r = NULL;
777     uint32_t val = ~0U;
778 
779     switch (addr) {
780     case PI_BDBAR:
781     case PO_BDBAR:
782     case MC_BDBAR:
783         r = &s->bm_regs[GET_BM(addr)];
784         val = r->bdbar;
785         dolog("BMADDR[%d] -> 0x%x\n", GET_BM(addr), val);
786         break;
787     case PI_CIV:
788     case PO_CIV:
789     case MC_CIV:
790         r = &s->bm_regs[GET_BM(addr)];
791         val = r->civ | (r->lvi << 8) | (r->sr << 16);
792         dolog("CIV LVI SR[%d] -> 0x%x, 0x%x, 0x%x\n", GET_BM(addr),
793                r->civ, r->lvi, r->sr);
794         break;
795     case PI_PICB:
796     case PO_PICB:
797     case MC_PICB:
798         r = &s->bm_regs[GET_BM(addr)];
799         val = r->picb | (r->piv << 16) | (r->cr << 24);
800         dolog("PICB PIV CR[%d] -> 0x%x 0x%x 0x%x 0x%x\n", GET_BM(addr),
801                val, r->picb, r->piv, r->cr);
802         break;
803     case GLOB_CNT:
804         val = s->glob_cnt;
805         dolog("glob_cnt -> 0x%x\n", val);
806         break;
807     case GLOB_STA:
808         val = s->glob_sta | GS_S0CR;
809         dolog("glob_sta -> 0x%x\n", val);
810         break;
811     default:
812         dolog("U nabm readl 0x%x -> 0x%x\n", addr, val);
813         break;
814     }
815     return val;
816 }
817 
818 /**
819  * Native audio bus master
820  * I/O Writes
821  */
822 static void nabm_writeb(void *opaque, uint32_t addr, uint32_t val)
823 {
824     AC97LinkState *s = opaque;
825     AC97BusMasterRegs *r = NULL;
826 
827     switch (addr) {
828     case PI_LVI:
829     case PO_LVI:
830     case MC_LVI:
831         r = &s->bm_regs[GET_BM(addr)];
832         if ((r->cr & CR_RPBM) && (r->sr & SR_DCH)) {
833             r->sr &= ~(SR_DCH | SR_CELV);
834             r->civ = r->piv;
835             r->piv = (r->piv + 1) % 32;
836             fetch_bd(s, r);
837         }
838         r->lvi = val % 32;
839         dolog("LVI[%d] <- 0x%x\n", GET_BM(addr), val);
840         break;
841     case PI_CR:
842     case PO_CR:
843     case MC_CR:
844         r = &s->bm_regs[GET_BM(addr)];
845         if (val & CR_RR) {
846             reset_bm_regs(s, r);
847         } else {
848             r->cr = val & CR_VALID_MASK;
849             if (!(r->cr & CR_RPBM)) {
850                 voice_set_active(s, r - s->bm_regs, 0);
851                 r->sr |= SR_DCH;
852             } else {
853                 r->civ = r->piv;
854                 r->piv = (r->piv + 1) % 32;
855                 fetch_bd(s, r);
856                 r->sr &= ~SR_DCH;
857                 voice_set_active(s, r - s->bm_regs, 1);
858             }
859         }
860         dolog("CR[%d] <- 0x%x (cr 0x%x)\n", GET_BM(addr), val, r->cr);
861         break;
862     case PI_SR:
863     case PO_SR:
864     case MC_SR:
865         r = &s->bm_regs[GET_BM(addr)];
866         r->sr |= val & ~(SR_RO_MASK | SR_WCLEAR_MASK);
867         update_sr(s, r, r->sr & ~(val & SR_WCLEAR_MASK));
868         dolog("SR[%d] <- 0x%x (sr 0x%x)\n", GET_BM(addr), val, r->sr);
869         break;
870     default:
871         dolog("U nabm writeb 0x%x <- 0x%x\n", addr, val);
872         break;
873     }
874 }
875 
876 static void nabm_writew(void *opaque, uint32_t addr, uint32_t val)
877 {
878     AC97LinkState *s = opaque;
879     AC97BusMasterRegs *r = NULL;
880 
881     switch (addr) {
882     case PI_SR:
883     case PO_SR:
884     case MC_SR:
885         r = &s->bm_regs[GET_BM(addr)];
886         r->sr |= val & ~(SR_RO_MASK | SR_WCLEAR_MASK);
887         update_sr(s, r, r->sr & ~(val & SR_WCLEAR_MASK));
888         dolog("SR[%d] <- 0x%x (sr 0x%x)\n", GET_BM(addr), val, r->sr);
889         break;
890     default:
891         dolog("U nabm writew 0x%x <- 0x%x\n", addr, val);
892         break;
893     }
894 }
895 
896 static void nabm_writel(void *opaque, uint32_t addr, uint32_t val)
897 {
898     AC97LinkState *s = opaque;
899     AC97BusMasterRegs *r = NULL;
900 
901     switch (addr) {
902     case PI_BDBAR:
903     case PO_BDBAR:
904     case MC_BDBAR:
905         r = &s->bm_regs[GET_BM(addr)];
906         r->bdbar = val & ~3;
907         dolog("BDBAR[%d] <- 0x%x (bdbar 0x%x)\n", GET_BM(addr), val, r->bdbar);
908         break;
909     case GLOB_CNT:
910         /* TODO: Handle WR or CR being set (warm/cold reset requests) */
911         if (!(val & (GC_WR | GC_CR))) {
912             s->glob_cnt = val & GC_VALID_MASK;
913         }
914         dolog("glob_cnt <- 0x%x (glob_cnt 0x%x)\n", val, s->glob_cnt);
915         break;
916     case GLOB_STA:
917         s->glob_sta &= ~(val & GS_WCLEAR_MASK);
918         s->glob_sta |= (val & ~(GS_WCLEAR_MASK | GS_RO_MASK)) & GS_VALID_MASK;
919         dolog("glob_sta <- 0x%x (glob_sta 0x%x)\n", val, s->glob_sta);
920         break;
921     default:
922         dolog("U nabm writel 0x%x <- 0x%x\n", addr, val);
923         break;
924     }
925 }
926 
927 static int write_audio(AC97LinkState *s, AC97BusMasterRegs *r,
928                        int max, int *stop)
929 {
930     uint8_t tmpbuf[4096];
931     uint32_t addr = r->bd.addr;
932     uint32_t temp = r->picb << 1;
933     uint32_t written = 0;
934     int to_copy = 0;
935     temp = MIN(temp, max);
936 
937     if (!temp) {
938         *stop = 1;
939         return 0;
940     }
941 
942     while (temp) {
943         int copied;
944         to_copy = MIN(temp, sizeof(tmpbuf));
945         pci_dma_read(&s->dev, addr, tmpbuf, to_copy);
946         copied = AUD_write(s->voice_po, tmpbuf, to_copy);
947         dolog("write_audio max=%x to_copy=%x copied=%x\n",
948               max, to_copy, copied);
949         if (!copied) {
950             *stop = 1;
951             break;
952         }
953         temp -= copied;
954         addr += copied;
955         written += copied;
956     }
957 
958     if (!temp) {
959         if (to_copy < 4) {
960             dolog("whoops\n");
961             s->last_samp = 0;
962         } else {
963             s->last_samp = *(uint32_t *)&tmpbuf[to_copy - 4];
964         }
965     }
966 
967     r->bd.addr = addr;
968     return written;
969 }
970 
971 static void write_bup(AC97LinkState *s, int elapsed)
972 {
973     dolog("write_bup\n");
974     if (!(s->bup_flag & BUP_SET)) {
975         if (s->bup_flag & BUP_LAST) {
976             int i;
977             uint8_t *p = s->silence;
978             for (i = 0; i < sizeof(s->silence) / 4; i++, p += 4) {
979                 *(uint32_t *) p = s->last_samp;
980             }
981         } else {
982             memset(s->silence, 0, sizeof(s->silence));
983         }
984         s->bup_flag |= BUP_SET;
985     }
986 
987     while (elapsed) {
988         int temp = MIN(elapsed, sizeof(s->silence));
989         while (temp) {
990             int copied = AUD_write(s->voice_po, s->silence, temp);
991             if (!copied) {
992                 return;
993             }
994             temp -= copied;
995             elapsed -= copied;
996         }
997     }
998 }
999 
1000 static int read_audio(AC97LinkState *s, AC97BusMasterRegs *r,
1001                       int max, int *stop)
1002 {
1003     uint8_t tmpbuf[4096];
1004     uint32_t addr = r->bd.addr;
1005     uint32_t temp = r->picb << 1;
1006     uint32_t nread = 0;
1007     int to_copy = 0;
1008     SWVoiceIn *voice = (r - s->bm_regs) == MC_INDEX ? s->voice_mc : s->voice_pi;
1009 
1010     temp = MIN(temp, max);
1011 
1012     if (!temp) {
1013         *stop = 1;
1014         return 0;
1015     }
1016 
1017     while (temp) {
1018         int acquired;
1019         to_copy = MIN(temp, sizeof(tmpbuf));
1020         acquired = AUD_read(voice, tmpbuf, to_copy);
1021         if (!acquired) {
1022             *stop = 1;
1023             break;
1024         }
1025         pci_dma_write(&s->dev, addr, tmpbuf, acquired);
1026         temp -= acquired;
1027         addr += acquired;
1028         nread += acquired;
1029     }
1030 
1031     r->bd.addr = addr;
1032     return nread;
1033 }
1034 
1035 static void transfer_audio(AC97LinkState *s, int index, int elapsed)
1036 {
1037     AC97BusMasterRegs *r = &s->bm_regs[index];
1038     int stop = 0;
1039 
1040     if (s->invalid_freq[index]) {
1041         AUD_log("ac97", "attempt to use voice %d with invalid frequency %d\n",
1042                 index, s->invalid_freq[index]);
1043         return;
1044     }
1045 
1046     if (r->sr & SR_DCH) {
1047         if (r->cr & CR_RPBM) {
1048             switch (index) {
1049             case PO_INDEX:
1050                 write_bup(s, elapsed);
1051                 break;
1052             }
1053         }
1054         return;
1055     }
1056 
1057     while ((elapsed >> 1) && !stop) {
1058         int temp;
1059 
1060         if (!r->bd_valid) {
1061             dolog("invalid bd\n");
1062             fetch_bd(s, r);
1063         }
1064 
1065         if (!r->picb) {
1066             dolog("fresh bd %d is empty 0x%x 0x%x\n",
1067                   r->civ, r->bd.addr, r->bd.ctl_len);
1068             if (r->civ == r->lvi) {
1069                 r->sr |= SR_DCH; /* CELV? */
1070                 s->bup_flag = 0;
1071                 break;
1072             }
1073             r->sr &= ~SR_CELV;
1074             r->civ = r->piv;
1075             r->piv = (r->piv + 1) % 32;
1076             fetch_bd(s, r);
1077             return;
1078         }
1079 
1080         switch (index) {
1081         case PO_INDEX:
1082             temp = write_audio(s, r, elapsed, &stop);
1083             elapsed -= temp;
1084             r->picb -= (temp >> 1);
1085             break;
1086 
1087         case PI_INDEX:
1088         case MC_INDEX:
1089             temp = read_audio(s, r, elapsed, &stop);
1090             elapsed -= temp;
1091             r->picb -= (temp >> 1);
1092             break;
1093         }
1094 
1095         if (!r->picb) {
1096             uint32_t new_sr = r->sr & ~SR_CELV;
1097 
1098             if (r->bd.ctl_len & BD_IOC) {
1099                 new_sr |= SR_BCIS;
1100             }
1101 
1102             if (r->civ == r->lvi) {
1103                 dolog("Underrun civ (%d) == lvi (%d)\n", r->civ, r->lvi);
1104 
1105                 new_sr |= SR_LVBCI | SR_DCH | SR_CELV;
1106                 stop = 1;
1107                 s->bup_flag = (r->bd.ctl_len & BD_BUP) ? BUP_LAST : 0;
1108             } else {
1109                 r->civ = r->piv;
1110                 r->piv = (r->piv + 1) % 32;
1111                 fetch_bd(s, r);
1112             }
1113 
1114             update_sr(s, r, new_sr);
1115         }
1116     }
1117 }
1118 
1119 static void pi_callback(void *opaque, int avail)
1120 {
1121     transfer_audio(opaque, PI_INDEX, avail);
1122 }
1123 
1124 static void mc_callback(void *opaque, int avail)
1125 {
1126     transfer_audio(opaque, MC_INDEX, avail);
1127 }
1128 
1129 static void po_callback(void *opaque, int free)
1130 {
1131     transfer_audio(opaque, PO_INDEX, free);
1132 }
1133 
1134 static const VMStateDescription vmstate_ac97_bm_regs = {
1135     .name = "ac97_bm_regs",
1136     .version_id = 1,
1137     .minimum_version_id = 1,
1138     .fields = (VMStateField[]) {
1139         VMSTATE_UINT32(bdbar, AC97BusMasterRegs),
1140         VMSTATE_UINT8(civ, AC97BusMasterRegs),
1141         VMSTATE_UINT8(lvi, AC97BusMasterRegs),
1142         VMSTATE_UINT16(sr, AC97BusMasterRegs),
1143         VMSTATE_UINT16(picb, AC97BusMasterRegs),
1144         VMSTATE_UINT8(piv, AC97BusMasterRegs),
1145         VMSTATE_UINT8(cr, AC97BusMasterRegs),
1146         VMSTATE_UINT32(bd_valid, AC97BusMasterRegs),
1147         VMSTATE_UINT32(bd.addr, AC97BusMasterRegs),
1148         VMSTATE_UINT32(bd.ctl_len, AC97BusMasterRegs),
1149         VMSTATE_END_OF_LIST()
1150     }
1151 };
1152 
1153 static int ac97_post_load(void *opaque, int version_id)
1154 {
1155     uint8_t active[LAST_INDEX];
1156     AC97LinkState *s = opaque;
1157 
1158     record_select(s, mixer_load(s, AC97_Record_Select));
1159     set_volume(s, AC97_Master_Volume_Mute,
1160                mixer_load(s, AC97_Master_Volume_Mute));
1161     set_volume(s, AC97_PCM_Out_Volume_Mute,
1162                mixer_load(s, AC97_PCM_Out_Volume_Mute));
1163     set_volume(s, AC97_Record_Gain_Mute,
1164                mixer_load(s, AC97_Record_Gain_Mute));
1165 
1166     active[PI_INDEX] = !!(s->bm_regs[PI_INDEX].cr & CR_RPBM);
1167     active[PO_INDEX] = !!(s->bm_regs[PO_INDEX].cr & CR_RPBM);
1168     active[MC_INDEX] = !!(s->bm_regs[MC_INDEX].cr & CR_RPBM);
1169     reset_voices(s, active);
1170 
1171     s->bup_flag = 0;
1172     s->last_samp = 0;
1173     return 0;
1174 }
1175 
1176 static bool is_version_2(void *opaque, int version_id)
1177 {
1178     return version_id == 2;
1179 }
1180 
1181 static const VMStateDescription vmstate_ac97 = {
1182     .name = "ac97",
1183     .version_id = 3,
1184     .minimum_version_id = 2,
1185     .post_load = ac97_post_load,
1186     .fields = (VMStateField[]) {
1187         VMSTATE_PCI_DEVICE(dev, AC97LinkState),
1188         VMSTATE_UINT32(glob_cnt, AC97LinkState),
1189         VMSTATE_UINT32(glob_sta, AC97LinkState),
1190         VMSTATE_UINT32(cas, AC97LinkState),
1191         VMSTATE_STRUCT_ARRAY(bm_regs, AC97LinkState, 3, 1,
1192                              vmstate_ac97_bm_regs, AC97BusMasterRegs),
1193         VMSTATE_BUFFER(mixer_data, AC97LinkState),
1194         VMSTATE_UNUSED_TEST(is_version_2, 3),
1195         VMSTATE_END_OF_LIST()
1196     }
1197 };
1198 
1199 static uint64_t nam_read(void *opaque, hwaddr addr, unsigned size)
1200 {
1201     if ((addr / size) > 256) {
1202         return -1;
1203     }
1204 
1205     switch (size) {
1206     case 1:
1207         return nam_readb(opaque, addr);
1208     case 2:
1209         return nam_readw(opaque, addr);
1210     case 4:
1211         return nam_readl(opaque, addr);
1212     default:
1213         return -1;
1214     }
1215 }
1216 
1217 static void nam_write(void *opaque, hwaddr addr, uint64_t val,
1218                       unsigned size)
1219 {
1220     if ((addr / size) > 256) {
1221         return;
1222     }
1223 
1224     switch (size) {
1225     case 1:
1226         nam_writeb(opaque, addr, val);
1227         break;
1228     case 2:
1229         nam_writew(opaque, addr, val);
1230         break;
1231     case 4:
1232         nam_writel(opaque, addr, val);
1233         break;
1234     }
1235 }
1236 
1237 static const MemoryRegionOps ac97_io_nam_ops = {
1238     .read = nam_read,
1239     .write = nam_write,
1240     .impl = {
1241         .min_access_size = 1,
1242         .max_access_size = 4,
1243     },
1244     .endianness = DEVICE_LITTLE_ENDIAN,
1245 };
1246 
1247 static uint64_t nabm_read(void *opaque, hwaddr addr, unsigned size)
1248 {
1249     if ((addr / size) > 64) {
1250         return -1;
1251     }
1252 
1253     switch (size) {
1254     case 1:
1255         return nabm_readb(opaque, addr);
1256     case 2:
1257         return nabm_readw(opaque, addr);
1258     case 4:
1259         return nabm_readl(opaque, addr);
1260     default:
1261         return -1;
1262     }
1263 }
1264 
1265 static void nabm_write(void *opaque, hwaddr addr, uint64_t val,
1266                        unsigned size)
1267 {
1268     if ((addr / size) > 64) {
1269         return;
1270     }
1271 
1272     switch (size) {
1273     case 1:
1274         nabm_writeb(opaque, addr, val);
1275         break;
1276     case 2:
1277         nabm_writew(opaque, addr, val);
1278         break;
1279     case 4:
1280         nabm_writel(opaque, addr, val);
1281         break;
1282     }
1283 }
1284 
1285 
1286 static const MemoryRegionOps ac97_io_nabm_ops = {
1287     .read = nabm_read,
1288     .write = nabm_write,
1289     .impl = {
1290         .min_access_size = 1,
1291         .max_access_size = 4,
1292     },
1293     .endianness = DEVICE_LITTLE_ENDIAN,
1294 };
1295 
1296 static void ac97_on_reset(DeviceState *dev)
1297 {
1298     AC97LinkState *s = container_of(dev, AC97LinkState, dev.qdev);
1299 
1300     reset_bm_regs(s, &s->bm_regs[0]);
1301     reset_bm_regs(s, &s->bm_regs[1]);
1302     reset_bm_regs(s, &s->bm_regs[2]);
1303 
1304     /*
1305      * Reset the mixer too. The Windows XP driver seems to rely on
1306      * this. At least it wants to read the vendor id before it resets
1307      * the codec manually.
1308      */
1309     mixer_reset(s);
1310 }
1311 
1312 static void ac97_realize(PCIDevice *dev, Error **errp)
1313 {
1314     AC97LinkState *s = AC97(dev);
1315     uint8_t *c = s->dev.config;
1316 
1317     /* TODO: no need to override */
1318     c[PCI_COMMAND] = 0x00;      /* pcicmd pci command rw, ro */
1319     c[PCI_COMMAND + 1] = 0x00;
1320 
1321     /* TODO: */
1322     c[PCI_STATUS] = PCI_STATUS_FAST_BACK;      /* pcists pci status rwc, ro */
1323     c[PCI_STATUS + 1] = PCI_STATUS_DEVSEL_MEDIUM >> 8;
1324 
1325     c[PCI_CLASS_PROG] = 0x00;      /* pi programming interface ro */
1326 
1327     /* TODO set when bar is registered. no need to override. */
1328     /* nabmar native audio mixer base address rw */
1329     c[PCI_BASE_ADDRESS_0] = PCI_BASE_ADDRESS_SPACE_IO;
1330     c[PCI_BASE_ADDRESS_0 + 1] = 0x00;
1331     c[PCI_BASE_ADDRESS_0 + 2] = 0x00;
1332     c[PCI_BASE_ADDRESS_0 + 3] = 0x00;
1333 
1334     /* TODO set when bar is registered. no need to override. */
1335       /* nabmbar native audio bus mastering base address rw */
1336     c[PCI_BASE_ADDRESS_0 + 4] = PCI_BASE_ADDRESS_SPACE_IO;
1337     c[PCI_BASE_ADDRESS_0 + 5] = 0x00;
1338     c[PCI_BASE_ADDRESS_0 + 6] = 0x00;
1339     c[PCI_BASE_ADDRESS_0 + 7] = 0x00;
1340 
1341     c[PCI_INTERRUPT_LINE] = 0x00;      /* intr_ln interrupt line rw */
1342     c[PCI_INTERRUPT_PIN] = 0x01;      /* intr_pn interrupt pin ro */
1343 
1344     memory_region_init_io(&s->io_nam, OBJECT(s), &ac97_io_nam_ops, s,
1345                           "ac97-nam", 1024);
1346     memory_region_init_io(&s->io_nabm, OBJECT(s), &ac97_io_nabm_ops, s,
1347                           "ac97-nabm", 256);
1348     pci_register_bar(&s->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io_nam);
1349     pci_register_bar(&s->dev, 1, PCI_BASE_ADDRESS_SPACE_IO, &s->io_nabm);
1350     AUD_register_card("ac97", &s->card);
1351     ac97_on_reset(DEVICE(s));
1352 }
1353 
1354 static void ac97_exit(PCIDevice *dev)
1355 {
1356     AC97LinkState *s = AC97(dev);
1357 
1358     AUD_close_in(&s->card, s->voice_pi);
1359     AUD_close_out(&s->card, s->voice_po);
1360     AUD_close_in(&s->card, s->voice_mc);
1361     AUD_remove_card(&s->card);
1362 }
1363 
1364 static Property ac97_properties[] = {
1365     DEFINE_AUDIO_PROPERTIES(AC97LinkState, card),
1366     DEFINE_PROP_END_OF_LIST(),
1367 };
1368 
1369 static void ac97_class_init(ObjectClass *klass, void *data)
1370 {
1371     DeviceClass *dc = DEVICE_CLASS(klass);
1372     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1373 
1374     k->realize = ac97_realize;
1375     k->exit = ac97_exit;
1376     k->vendor_id = PCI_VENDOR_ID_INTEL;
1377     k->device_id = PCI_DEVICE_ID_INTEL_82801AA_5;
1378     k->revision = 0x01;
1379     k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
1380     set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
1381     dc->desc = "Intel 82801AA AC97 Audio";
1382     dc->vmsd = &vmstate_ac97;
1383     device_class_set_props(dc, ac97_properties);
1384     dc->reset = ac97_on_reset;
1385 }
1386 
1387 static const TypeInfo ac97_info = {
1388     .name          = TYPE_AC97,
1389     .parent        = TYPE_PCI_DEVICE,
1390     .instance_size = sizeof(AC97LinkState),
1391     .class_init    = ac97_class_init,
1392     .interfaces = (InterfaceInfo[]) {
1393         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
1394         { },
1395     },
1396 };
1397 
1398 static void ac97_register_types(void)
1399 {
1400     type_register_static(&ac97_info);
1401     deprecated_register_soundhw("ac97", "Intel 82801AA AC97 Audio",
1402                                 0, TYPE_AC97);
1403 }
1404 
1405 type_init(ac97_register_types)
1406