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1 /*
2  * VT82C686B south bridge support
3  *
4  * Copyright (c) 2008 yajin ([email protected])
5  * Copyright (c) 2009 chenming ([email protected])
6  * Copyright (c) 2010 Huacai Chen ([email protected])
7  * This code is licensed under the GNU GPL v2.
8  *
9  * Contributions after 2012-01-13 are licensed under the terms of the
10  * GNU GPL, version 2 or (at your option) any later version.
11  */
12
13 #include "hw.h"
14 #include "pc.h"
15 #include "vt82c686.h"
16 #include "i2c.h"
17 #include "smbus.h"
18 #include "pci.h"
19 #include "isa.h"
20 #include "sysbus.h"
21 #include "mips.h"
22 #include "apm.h"
23 #include "acpi.h"
24 #include "pm_smbus.h"
25 #include "sysemu.h"
26 #include "qemu-timer.h"
27
28 typedef uint32_t pci_addr_t;
29 #include "pci_host.h"
30 //#define DEBUG_VT82C686B
31
32 #ifdef DEBUG_VT82C686B
33 #define DPRINTF(fmt, ...) fprintf(stderr, "%s: " fmt, __FUNCTION__, ##__VA_ARGS__)
34 #else
35 #define DPRINTF(fmt, ...)
36 #endif
37
38 typedef struct SuperIOConfig
39 {
40     uint8_t config[0xff];
41     uint8_t index;
42     uint8_t data;
43 } SuperIOConfig;
44
45 typedef struct VT82C686BState {
46     PCIDevice dev;
47     SuperIOConfig superio_conf;
48 } VT82C686BState;
49
50 static void superio_ioport_writeb(void *opaque, uint32_t addr, uint32_t data)
51 {
52     int can_write;
53     SuperIOConfig *superio_conf = opaque;
54
55     DPRINTF("superio_ioport_writeb  address 0x%x  val 0x%x\n", addr, data);
56     if (addr == 0x3f0) {
57         superio_conf->index = data & 0xff;
58     } else {
59         /* 0x3f1 */
60         switch (superio_conf->index) {
61         case 0x00 ... 0xdf:
62         case 0xe4:
63         case 0xe5:
64         case 0xe9 ... 0xed:
65         case 0xf3:
66         case 0xf5:
67         case 0xf7:
68         case 0xf9 ... 0xfb:
69         case 0xfd ... 0xff:
70             can_write = 0;
71             break;
72         default:
73             can_write = 1;
74
75             if (can_write) {
76                 switch (superio_conf->index) {
77                 case 0xe7:
78                     if ((data & 0xff) != 0xfe) {
79                         DPRINTF("chage uart 1 base. unsupported yet\n");
80                     }
81                     break;
82                 case 0xe8:
83                     if ((data & 0xff) != 0xbe) {
84                         DPRINTF("chage uart 2 base. unsupported yet\n");
85                     }
86                     break;
87
88                 default:
89                     superio_conf->config[superio_conf->index] = data & 0xff;
90                 }
91             }
92         }
93         superio_conf->config[superio_conf->index] = data & 0xff;
94     }
95 }
96
97 static uint32_t superio_ioport_readb(void *opaque, uint32_t addr)
98 {
99     SuperIOConfig *superio_conf = opaque;
100
101     DPRINTF("superio_ioport_readb  address 0x%x\n", addr);
102     return (superio_conf->config[superio_conf->index]);
103 }
104
105 static void vt82c686b_reset(void * opaque)
106 {
107     PCIDevice *d = opaque;
108     uint8_t *pci_conf = d->config;
109     VT82C686BState *vt82c = DO_UPCAST(VT82C686BState, dev, d);
110
111     pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0);
112     pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
113                  PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL);
114     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM);
115
116     pci_conf[0x48] = 0x01; /* Miscellaneous Control 3 */
117     pci_conf[0x4a] = 0x04; /* IDE interrupt Routing */
118     pci_conf[0x4f] = 0x03; /* DMA/Master Mem Access Control 3 */
119     pci_conf[0x50] = 0x2d; /* PnP DMA Request Control */
120     pci_conf[0x59] = 0x04;
121     pci_conf[0x5a] = 0x04; /* KBC/RTC Control*/
122     pci_conf[0x5f] = 0x04;
123     pci_conf[0x77] = 0x10; /* GPIO Control 1/2/3/4 */
124
125     vt82c->superio_conf.config[0xe0] = 0x3c;
126     vt82c->superio_conf.config[0xe2] = 0x03;
127     vt82c->superio_conf.config[0xe3] = 0xfc;
128     vt82c->superio_conf.config[0xe6] = 0xde;
129     vt82c->superio_conf.config[0xe7] = 0xfe;
130     vt82c->superio_conf.config[0xe8] = 0xbe;
131 }
132
133 /* write config pci function0 registers. PCI-ISA bridge */
134 static void vt82c686b_write_config(PCIDevice * d, uint32_t address,
135                                    uint32_t val, int len)
136 {
137     VT82C686BState *vt686 = DO_UPCAST(VT82C686BState, dev, d);
138
139     DPRINTF("vt82c686b_write_config  address 0x%x  val 0x%x len 0x%x\n",
140            address, val, len);
141
142     pci_default_write_config(d, address, val, len);
143     if (address == 0x85) {  /* enable or disable super IO configure */
144         if (val & 0x2) {
145             /* floppy also uses 0x3f0 and 0x3f1.
146              * But we do not emulate flopy,so just set it here. */
147             isa_unassign_ioport(0x3f0, 2);
148             register_ioport_read(0x3f0, 2, 1, superio_ioport_readb,
149                                  &vt686->superio_conf);
150             register_ioport_write(0x3f0, 2, 1, superio_ioport_writeb,
151                                   &vt686->superio_conf);
152         } else {
153             isa_unassign_ioport(0x3f0, 2);
154         }
155     }
156 }
157
158 #define ACPI_DBG_IO_ADDR  0xb044
159
160 typedef struct VT686PMState {
161     PCIDevice dev;
162     ACPIPM1EVT pm1a;
163     ACPIPM1CNT pm1_cnt;
164     APMState apm;
165     ACPIPMTimer tmr;
166     PMSMBus smb;
167     uint32_t smb_io_base;
168 } VT686PMState;
169
170 typedef struct VT686AC97State {
171     PCIDevice dev;
172 } VT686AC97State;
173
174 typedef struct VT686MC97State {
175     PCIDevice dev;
176 } VT686MC97State;
177
178 static void pm_update_sci(VT686PMState *s)
179 {
180     int sci_level, pmsts;
181
182     pmsts = acpi_pm1_evt_get_sts(&s->pm1a, s->tmr.overflow_time);
183     sci_level = (((pmsts & s->pm1a.en) &
184                   (ACPI_BITMASK_RT_CLOCK_ENABLE |
185                    ACPI_BITMASK_POWER_BUTTON_ENABLE |
186                    ACPI_BITMASK_GLOBAL_LOCK_ENABLE |
187                    ACPI_BITMASK_TIMER_ENABLE)) != 0);
188     qemu_set_irq(s->dev.irq[0], sci_level);
189     /* schedule a timer interruption if needed */
190     acpi_pm_tmr_update(&s->tmr, (s->pm1a.en & ACPI_BITMASK_TIMER_ENABLE) &&
191                        !(pmsts & ACPI_BITMASK_TIMER_STATUS));
192 }
193
194 static void pm_tmr_timer(ACPIPMTimer *tmr)
195 {
196     VT686PMState *s = container_of(tmr, VT686PMState, tmr);
197     pm_update_sci(s);
198 }
199
200 static void pm_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
201 {
202     VT686PMState *s = opaque;
203
204     addr &= 0x0f;
205     switch (addr) {
206     case 0x00:
207         acpi_pm1_evt_write_sts(&s->pm1a, &s->tmr, val);
208         pm_update_sci(s);
209         break;
210     case 0x02:
211         s->pm1a.en = val;
212         pm_update_sci(s);
213         break;
214     case 0x04:
215         acpi_pm1_cnt_write(&s->pm1a, &s->pm1_cnt, val);
216         break;
217     default:
218         break;
219     }
220     DPRINTF("PM writew port=0x%04x val=0x%02x\n", addr, val);
221 }
222
223 static uint32_t pm_ioport_readw(void *opaque, uint32_t addr)
224 {
225     VT686PMState *s = opaque;
226     uint32_t val;
227
228     addr &= 0x0f;
229     switch (addr) {
230     case 0x00:
231         val = acpi_pm1_evt_get_sts(&s->pm1a, s->tmr.overflow_time);
232         break;
233     case 0x02:
234         val = s->pm1a.en;
235         break;
236     case 0x04:
237         val = s->pm1_cnt.cnt;
238         break;
239     default:
240         val = 0;
241         break;
242     }
243     DPRINTF("PM readw port=0x%04x val=0x%02x\n", addr, val);
244     return val;
245 }
246
247 static void pm_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
248 {
249     addr &= 0x0f;
250     DPRINTF("PM writel port=0x%04x val=0x%08x\n", addr, val);
251 }
252
253 static uint32_t pm_ioport_readl(void *opaque, uint32_t addr)
254 {
255     VT686PMState *s = opaque;
256     uint32_t val;
257
258     addr &= 0x0f;
259     switch (addr) {
260     case 0x08:
261         val = acpi_pm_tmr_get(&s->tmr);
262         break;
263     default:
264         val = 0;
265         break;
266     }
267     DPRINTF("PM readl port=0x%04x val=0x%08x\n", addr, val);
268     return val;
269 }
270
271 static void pm_io_space_update(VT686PMState *s)
272 {
273     uint32_t pm_io_base;
274
275     if (s->dev.config[0x80] & 1) {
276         pm_io_base = pci_get_long(s->dev.config + 0x40);
277         pm_io_base &= 0xffc0;
278
279         /* XXX: need to improve memory and ioport allocation */
280         DPRINTF("PM: mapping to 0x%x\n", pm_io_base);
281         register_ioport_write(pm_io_base, 64, 2, pm_ioport_writew, s);
282         register_ioport_read(pm_io_base, 64, 2, pm_ioport_readw, s);
283         register_ioport_write(pm_io_base, 64, 4, pm_ioport_writel, s);
284         register_ioport_read(pm_io_base, 64, 4, pm_ioport_readl, s);
285     }
286 }
287
288 static void pm_write_config(PCIDevice *d,
289                             uint32_t address, uint32_t val, int len)
290 {
291     DPRINTF("pm_write_config  address 0x%x  val 0x%x len 0x%x\n",
292            address, val, len);
293     pci_default_write_config(d, address, val, len);
294 }
295
296 static int vmstate_acpi_post_load(void *opaque, int version_id)
297 {
298     VT686PMState *s = opaque;
299
300     pm_io_space_update(s);
301     return 0;
302 }
303
304 static const VMStateDescription vmstate_acpi = {
305     .name = "vt82c686b_pm",
306     .version_id = 1,
307     .minimum_version_id = 1,
308     .minimum_version_id_old = 1,
309     .post_load = vmstate_acpi_post_load,
310     .fields      = (VMStateField []) {
311         VMSTATE_PCI_DEVICE(dev, VT686PMState),
312         VMSTATE_UINT16(pm1a.sts, VT686PMState),
313         VMSTATE_UINT16(pm1a.en, VT686PMState),
314         VMSTATE_UINT16(pm1_cnt.cnt, VT686PMState),
315         VMSTATE_STRUCT(apm, VT686PMState, 0, vmstate_apm, APMState),
316         VMSTATE_TIMER(tmr.timer, VT686PMState),
317         VMSTATE_INT64(tmr.overflow_time, VT686PMState),
318         VMSTATE_END_OF_LIST()
319     }
320 };
321
322 /*
323  * TODO: vt82c686b_ac97_init() and vt82c686b_mc97_init()
324  * just register a PCI device now, functionalities will be implemented later.
325  */
326
327 static int vt82c686b_ac97_initfn(PCIDevice *dev)
328 {
329     VT686AC97State *s = DO_UPCAST(VT686AC97State, dev, dev);
330     uint8_t *pci_conf = s->dev.config;
331
332     pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_INVALIDATE |
333                  PCI_COMMAND_PARITY);
334     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_CAP_LIST |
335                  PCI_STATUS_DEVSEL_MEDIUM);
336     pci_set_long(pci_conf + PCI_INTERRUPT_PIN, 0x03);
337
338     return 0;
339 }
340
341 void vt82c686b_ac97_init(PCIBus *bus, int devfn)
342 {
343     PCIDevice *dev;
344
345     dev = pci_create(bus, devfn, "VT82C686B_AC97");
346     qdev_init_nofail(&dev->qdev);
347 }
348
349 static void via_ac97_class_init(ObjectClass *klass, void *data)
350 {
351     DeviceClass *dc = DEVICE_CLASS(klass);
352     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
353
354     k->init = vt82c686b_ac97_initfn;
355     k->vendor_id = PCI_VENDOR_ID_VIA;
356     k->device_id = PCI_DEVICE_ID_VIA_AC97;
357     k->revision = 0x50;
358     k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
359     dc->desc = "AC97";
360 }
361
362 static TypeInfo via_ac97_info = {
363     .name          = "VT82C686B_AC97",
364     .parent        = TYPE_PCI_DEVICE,
365     .instance_size = sizeof(VT686AC97State),
366     .class_init    = via_ac97_class_init,
367 };
368
369 static int vt82c686b_mc97_initfn(PCIDevice *dev)
370 {
371     VT686MC97State *s = DO_UPCAST(VT686MC97State, dev, dev);
372     uint8_t *pci_conf = s->dev.config;
373
374     pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_INVALIDATE |
375                  PCI_COMMAND_VGA_PALETTE);
376     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM);
377     pci_set_long(pci_conf + PCI_INTERRUPT_PIN, 0x03);
378
379     return 0;
380 }
381
382 void vt82c686b_mc97_init(PCIBus *bus, int devfn)
383 {
384     PCIDevice *dev;
385
386     dev = pci_create(bus, devfn, "VT82C686B_MC97");
387     qdev_init_nofail(&dev->qdev);
388 }
389
390 static void via_mc97_class_init(ObjectClass *klass, void *data)
391 {
392     DeviceClass *dc = DEVICE_CLASS(klass);
393     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
394
395     k->init = vt82c686b_mc97_initfn;
396     k->vendor_id = PCI_VENDOR_ID_VIA;
397     k->device_id = PCI_DEVICE_ID_VIA_MC97;
398     k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
399     k->revision = 0x30;
400     dc->desc = "MC97";
401 }
402
403 static TypeInfo via_mc97_info = {
404     .name          = "VT82C686B_MC97",
405     .parent        = TYPE_PCI_DEVICE,
406     .instance_size = sizeof(VT686MC97State),
407     .class_init    = via_mc97_class_init,
408 };
409
410 /* vt82c686 pm init */
411 static int vt82c686b_pm_initfn(PCIDevice *dev)
412 {
413     VT686PMState *s = DO_UPCAST(VT686PMState, dev, dev);
414     uint8_t *pci_conf;
415
416     pci_conf = s->dev.config;
417     pci_set_word(pci_conf + PCI_COMMAND, 0);
418     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK |
419                  PCI_STATUS_DEVSEL_MEDIUM);
420
421     /* 0x48-0x4B is Power Management I/O Base */
422     pci_set_long(pci_conf + 0x48, 0x00000001);
423
424     /* SMB ports:0xeee0~0xeeef */
425     s->smb_io_base =((s->smb_io_base & 0xfff0) + 0x0);
426     pci_conf[0x90] = s->smb_io_base | 1;
427     pci_conf[0x91] = s->smb_io_base >> 8;
428     pci_conf[0xd2] = 0x90;
429     register_ioport_write(s->smb_io_base, 0xf, 1, smb_ioport_writeb, &s->smb);
430     register_ioport_read(s->smb_io_base, 0xf, 1, smb_ioport_readb, &s->smb);
431
432     apm_init(&s->apm, NULL, s);
433
434     acpi_pm_tmr_init(&s->tmr, pm_tmr_timer);
435     acpi_pm1_cnt_init(&s->pm1_cnt, NULL);
436
437     pm_smbus_init(&s->dev.qdev, &s->smb);
438
439     return 0;
440 }
441
442 i2c_bus *vt82c686b_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
443                        qemu_irq sci_irq)
444 {
445     PCIDevice *dev;
446     VT686PMState *s;
447
448     dev = pci_create(bus, devfn, "VT82C686B_PM");
449     qdev_prop_set_uint32(&dev->qdev, "smb_io_base", smb_io_base);
450
451     s = DO_UPCAST(VT686PMState, dev, dev);
452
453     qdev_init_nofail(&dev->qdev);
454
455     return s->smb.smbus;
456 }
457
458 static Property via_pm_properties[] = {
459     DEFINE_PROP_UINT32("smb_io_base", VT686PMState, smb_io_base, 0),
460     DEFINE_PROP_END_OF_LIST(),
461 };
462
463 static void via_pm_class_init(ObjectClass *klass, void *data)
464 {
465     DeviceClass *dc = DEVICE_CLASS(klass);
466     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
467
468     k->init = vt82c686b_pm_initfn;
469     k->config_write = pm_write_config;
470     k->vendor_id = PCI_VENDOR_ID_VIA;
471     k->device_id = PCI_DEVICE_ID_VIA_ACPI;
472     k->class_id = PCI_CLASS_BRIDGE_OTHER;
473     k->revision = 0x40;
474     dc->desc = "PM";
475     dc->vmsd = &vmstate_acpi;
476     dc->props = via_pm_properties;
477 }
478
479 static TypeInfo via_pm_info = {
480     .name          = "VT82C686B_PM",
481     .parent        = TYPE_PCI_DEVICE,
482     .instance_size = sizeof(VT686PMState),
483     .class_init    = via_pm_class_init,
484 };
485
486 static const VMStateDescription vmstate_via = {
487     .name = "vt82c686b",
488     .version_id = 1,
489     .minimum_version_id = 1,
490     .minimum_version_id_old = 1,
491     .fields      = (VMStateField []) {
492         VMSTATE_PCI_DEVICE(dev, VT82C686BState),
493         VMSTATE_END_OF_LIST()
494     }
495 };
496
497 /* init the PCI-to-ISA bridge */
498 static int vt82c686b_initfn(PCIDevice *d)
499 {
500     uint8_t *pci_conf;
501     uint8_t *wmask;
502     int i;
503
504     isa_bus_new(&d->qdev, pci_address_space_io(d));
505
506     pci_conf = d->config;
507     pci_config_set_prog_interface(pci_conf, 0x0);
508
509     wmask = d->wmask;
510     for (i = 0x00; i < 0xff; i++) {
511        if (i<=0x03 || (i>=0x08 && i<=0x3f)) {
512            wmask[i] = 0x00;
513        }
514     }
515
516     qemu_register_reset(vt82c686b_reset, d);
517
518     return 0;
519 }
520
521 ISABus *vt82c686b_init(PCIBus *bus, int devfn)
522 {
523     PCIDevice *d;
524
525     d = pci_create_simple_multifunction(bus, devfn, true, "VT82C686B");
526
527     return DO_UPCAST(ISABus, qbus, qdev_get_child_bus(&d->qdev, "isa.0"));
528 }
529
530 static void via_class_init(ObjectClass *klass, void *data)
531 {
532     DeviceClass *dc = DEVICE_CLASS(klass);
533     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
534
535     k->init = vt82c686b_initfn;
536     k->config_write = vt82c686b_write_config;
537     k->vendor_id = PCI_VENDOR_ID_VIA;
538     k->device_id = PCI_DEVICE_ID_VIA_ISA_BRIDGE;
539     k->class_id = PCI_CLASS_BRIDGE_ISA;
540     k->revision = 0x40;
541     dc->desc = "ISA bridge";
542     dc->no_user = 1;
543     dc->vmsd = &vmstate_via;
544 }
545
546 static TypeInfo via_info = {
547     .name          = "VT82C686B",
548     .parent        = TYPE_PCI_DEVICE,
549     .instance_size = sizeof(VT82C686BState),
550     .class_init    = via_class_init,
551 };
552
553 static void vt82c686b_register_types(void)
554 {
555     type_register_static(&via_ac97_info);
556     type_register_static(&via_mc97_info);
557     type_register_static(&via_pm_info);
558     type_register_static(&via_info);
559 }
560
561 type_init(vt82c686b_register_types)
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