hw/isa/vt82c686.c

   1 /*
   2  * VT82C686B south bridge support
   3  *
   4  * Copyright (c) 2008 yajin (yajin@vm-kernel.org)
   5  * Copyright (c) 2009 chenming (chenming@rdc.faw.com.cn)
   6  * Copyright (c) 2010 Huacai Chen (zltjiangshi@gmail.com)
   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  * VT8231 south bridge support and general clean up to allow it
  13  * Copyright (c) 2018-2020 BALATON Zoltan
  14  */
  15
  16 #include "qemu/osdep.h"
  17 #include "hw/isa/vt82c686.h"
  18 #include "hw/pci/pci.h"
  19 #include "hw/qdev-properties.h"
  20 #include "hw/ide/pci.h"
  21 #include "hw/isa/isa.h"
  22 #include "hw/isa/superio.h"
  23 #include "hw/intc/i8259.h"
  24 #include "hw/irq.h"
  25 #include "hw/dma/i8257.h"
  26 #include "hw/usb/hcd-uhci.h"
  27 #include "hw/timer/i8254.h"
  28 #include "hw/rtc/mc146818rtc.h"
  29 #include "migration/vmstate.h"
  30 #include "hw/isa/apm.h"
  31 #include "hw/acpi/acpi.h"
  32 #include "hw/i2c/pm_smbus.h"
  33 #include "qapi/error.h"
  34 #include "qemu/log.h"
  35 #include "qemu/module.h"
  36 #include "qemu/range.h"
  37 #include "qemu/timer.h"
  38 #include "trace.h"
  39
  40 #define TYPE_VIA_PM "via-pm"
  41 OBJECT_DECLARE_SIMPLE_TYPE(ViaPMState, VIA_PM)
  42
  43 struct ViaPMState {
  44     PCIDevice dev;
  45     MemoryRegion io;
  46     ACPIREGS ar;
  47     APMState apm;
  48     PMSMBus smb;
  49 };
  50
  51 static void pm_io_space_update(ViaPMState *s)
  52 {
  53     uint32_t pmbase = pci_get_long(s->dev.config + 0x48) & 0xff80UL;
  54
  55     memory_region_transaction_begin();
  56     memory_region_set_address(&s->io, pmbase);
  57     memory_region_set_enabled(&s->io, s->dev.config[0x41] & BIT(7));
  58     memory_region_transaction_commit();
  59 }
  60
  61 static void smb_io_space_update(ViaPMState *s)
  62 {
  63     uint32_t smbase = pci_get_long(s->dev.config + 0x90) & 0xfff0UL;
  64
  65     memory_region_transaction_begin();
  66     memory_region_set_address(&s->smb.io, smbase);
  67     memory_region_set_enabled(&s->smb.io, s->dev.config[0xd2] & BIT(0));
  68     memory_region_transaction_commit();
  69 }
  70
  71 static int vmstate_acpi_post_load(void *opaque, int version_id)
  72 {
  73     ViaPMState *s = opaque;
  74
  75     pm_io_space_update(s);
  76     smb_io_space_update(s);
  77     return 0;
  78 }
  79
  80 static const VMStateDescription vmstate_acpi = {
  81     .name = "vt82c686b_pm",
  82     .version_id = 1,
  83     .minimum_version_id = 1,
  84     .post_load = vmstate_acpi_post_load,
  85     .fields = (VMStateField[]) {
  86         VMSTATE_PCI_DEVICE(dev, ViaPMState),
  87         VMSTATE_UINT16(ar.pm1.evt.sts, ViaPMState),
  88         VMSTATE_UINT16(ar.pm1.evt.en, ViaPMState),
  89         VMSTATE_UINT16(ar.pm1.cnt.cnt, ViaPMState),
  90         VMSTATE_STRUCT(apm, ViaPMState, 0, vmstate_apm, APMState),
  91         VMSTATE_TIMER_PTR(ar.tmr.timer, ViaPMState),
  92         VMSTATE_INT64(ar.tmr.overflow_time, ViaPMState),
  93         VMSTATE_END_OF_LIST()
  94     }
  95 };
  96
  97 static void pm_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int len)
  98 {
  99     ViaPMState *s = VIA_PM(d);
 100
 101     trace_via_pm_write(addr, val, len);
 102     pci_default_write_config(d, addr, val, len);
 103     if (ranges_overlap(addr, len, 0x48, 4)) {
 104         uint32_t v = pci_get_long(s->dev.config + 0x48);
 105         pci_set_long(s->dev.config + 0x48, (v & 0xff80UL) | 1);
 106     }
 107     if (range_covers_byte(addr, len, 0x41)) {
 108         pm_io_space_update(s);
 109     }
 110     if (ranges_overlap(addr, len, 0x90, 4)) {
 111         uint32_t v = pci_get_long(s->dev.config + 0x90);
 112         pci_set_long(s->dev.config + 0x90, (v & 0xfff0UL) | 1);
 113     }
 114     if (range_covers_byte(addr, len, 0xd2)) {
 115         s->dev.config[0xd2] &= 0xf;
 116         smb_io_space_update(s);
 117     }
 118 }
 119
 120 static void pm_io_write(void *op, hwaddr addr, uint64_t data, unsigned size)
 121 {
 122     trace_via_pm_io_write(addr, data, size);
 123 }
 124
 125 static uint64_t pm_io_read(void *op, hwaddr addr, unsigned size)
 126 {
 127     trace_via_pm_io_read(addr, 0, size);
 128     return 0;
 129 }
 130
 131 static const MemoryRegionOps pm_io_ops = {
 132     .read = pm_io_read,
 133     .write = pm_io_write,
 134     .endianness = DEVICE_NATIVE_ENDIAN,
 135     .impl = {
 136         .min_access_size = 1,
 137         .max_access_size = 1,
 138     },
 139 };
 140
 141 static void pm_update_sci(ViaPMState *s)
 142 {
 143     int sci_level, pmsts;
 144
 145     pmsts = acpi_pm1_evt_get_sts(&s->ar);
 146     sci_level = (((pmsts & s->ar.pm1.evt.en) &
 147                   (ACPI_BITMASK_RT_CLOCK_ENABLE |
 148                    ACPI_BITMASK_POWER_BUTTON_ENABLE |
 149                    ACPI_BITMASK_GLOBAL_LOCK_ENABLE |
 150                    ACPI_BITMASK_TIMER_ENABLE)) != 0);
 151     if (pci_get_byte(s->dev.config + PCI_INTERRUPT_PIN)) {
 152         /*
 153          * FIXME:
 154          * Fix device model that realizes this PM device and remove
 155          * this work around.
 156          * The device model should wire SCI and setup
 157          * PCI_INTERRUPT_PIN properly.
 158          * If PIN# = 0(interrupt pin isn't used), don't raise SCI as
 159          * work around.
 160          */
 161         pci_set_irq(&s->dev, sci_level);
 162     }
 163     /* schedule a timer interruption if needed */
 164     acpi_pm_tmr_update(&s->ar, (s->ar.pm1.evt.en & ACPI_BITMASK_TIMER_ENABLE) &&
 165                        !(pmsts & ACPI_BITMASK_TIMER_STATUS));
 166 }
 167
 168 static void pm_tmr_timer(ACPIREGS *ar)
 169 {
 170     ViaPMState *s = container_of(ar, ViaPMState, ar);
 171     pm_update_sci(s);
 172 }
 173
 174 static void via_pm_reset(DeviceState *d)
 175 {
 176     ViaPMState *s = VIA_PM(d);
 177
 178     memset(s->dev.config + PCI_CONFIG_HEADER_SIZE, 0,
 179            PCI_CONFIG_SPACE_SIZE - PCI_CONFIG_HEADER_SIZE);
 180     /* Power Management IO base */
 181     pci_set_long(s->dev.config + 0x48, 1);
 182     /* SMBus IO base */
 183     pci_set_long(s->dev.config + 0x90, 1);
 184
 185     acpi_pm1_evt_reset(&s->ar);
 186     acpi_pm1_cnt_reset(&s->ar);
 187     acpi_pm_tmr_reset(&s->ar);
 188     pm_update_sci(s);
 189
 190     pm_io_space_update(s);
 191     smb_io_space_update(s);
 192 }
 193
 194 static void via_pm_realize(PCIDevice *dev, Error **errp)
 195 {
 196     ViaPMState *s = VIA_PM(dev);
 197
 198     pci_set_word(dev->config + PCI_STATUS, PCI_STATUS_FAST_BACK |
 199                  PCI_STATUS_DEVSEL_MEDIUM);
 200
 201     pm_smbus_init(DEVICE(s), &s->smb, false);
 202     memory_region_add_subregion(pci_address_space_io(dev), 0, &s->smb.io);
 203     memory_region_set_enabled(&s->smb.io, false);
 204
 205     apm_init(dev, &s->apm, NULL, s);
 206
 207     memory_region_init_io(&s->io, OBJECT(dev), &pm_io_ops, s, "via-pm", 128);
 208     memory_region_add_subregion(pci_address_space_io(dev), 0, &s->io);
 209     memory_region_set_enabled(&s->io, false);
 210
 211     acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io);
 212     acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io);
 213     acpi_pm1_cnt_init(&s->ar, &s->io, false, false, 2, false);
 214 }
 215
 216 typedef struct via_pm_init_info {
 217     uint16_t device_id;
 218 } ViaPMInitInfo;
 219
 220 static void via_pm_class_init(ObjectClass *klass, void *data)
 221 {
 222     DeviceClass *dc = DEVICE_CLASS(klass);
 223     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 224     ViaPMInitInfo *info = data;
 225
 226     k->realize = via_pm_realize;
 227     k->config_write = pm_write_config;
 228     k->vendor_id = PCI_VENDOR_ID_VIA;
 229     k->device_id = info->device_id;
 230     k->class_id = PCI_CLASS_BRIDGE_OTHER;
 231     k->revision = 0x40;
 232     dc->reset = via_pm_reset;
 233     /* Reason: part of VIA south bridge, does not exist stand alone */
 234     dc->user_creatable = false;
 235     dc->vmsd = &vmstate_acpi;
 236 }
 237
 238 static const TypeInfo via_pm_info = {
 239     .name          = TYPE_VIA_PM,
 240     .parent        = TYPE_PCI_DEVICE,
 241     .instance_size = sizeof(ViaPMState),
 242     .abstract      = true,
 243     .interfaces = (InterfaceInfo[]) {
 244         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 245         { },
 246     },
 247 };
 248
 249 static const ViaPMInitInfo vt82c686b_pm_init_info = {
 250     .device_id = PCI_DEVICE_ID_VIA_82C686B_PM,
 251 };
 252
 253 #define TYPE_VT82C686B_PM "vt82c686b-pm"
 254
 255 static const TypeInfo vt82c686b_pm_info = {
 256     .name          = TYPE_VT82C686B_PM,
 257     .parent        = TYPE_VIA_PM,
 258     .class_init    = via_pm_class_init,
 259     .class_data    = (void *)&vt82c686b_pm_init_info,
 260 };
 261
 262 static const ViaPMInitInfo vt8231_pm_init_info = {
 263     .device_id = PCI_DEVICE_ID_VIA_8231_PM,
 264 };
 265
 266 #define TYPE_VT8231_PM "vt8231-pm"
 267
 268 static const TypeInfo vt8231_pm_info = {
 269     .name          = TYPE_VT8231_PM,
 270     .parent        = TYPE_VIA_PM,
 271     .class_init    = via_pm_class_init,
 272     .class_data    = (void *)&vt8231_pm_init_info,
 273 };
 274
 275
 276 #define TYPE_VIA_SUPERIO "via-superio"
 277 OBJECT_DECLARE_SIMPLE_TYPE(ViaSuperIOState, VIA_SUPERIO)
 278
 279 struct ViaSuperIOState {
 280     ISASuperIODevice superio;
 281     uint8_t regs[0x100];
 282     const MemoryRegionOps *io_ops;
 283     MemoryRegion io;
 284 };
 285
 286 static inline void via_superio_io_enable(ViaSuperIOState *s, bool enable)
 287 {
 288     memory_region_set_enabled(&s->io, enable);
 289 }
 290
 291 static void via_superio_realize(DeviceState *d, Error **errp)
 292 {
 293     ViaSuperIOState *s = VIA_SUPERIO(d);
 294     ISASuperIOClass *ic = ISA_SUPERIO_GET_CLASS(s);
 295     Error *local_err = NULL;
 296
 297     assert(s->io_ops);
 298     ic->parent_realize(d, &local_err);
 299     if (local_err) {
 300         error_propagate(errp, local_err);
 301         return;
 302     }
 303     memory_region_init_io(&s->io, OBJECT(d), s->io_ops, s, "via-superio", 2);
 304     memory_region_set_enabled(&s->io, false);
 305     /* The floppy also uses 0x3f0 and 0x3f1 but this seems to work anyway */
 306     memory_region_add_subregion(isa_address_space_io(ISA_DEVICE(s)), 0x3f0,
 307                                 &s->io);
 308 }
 309
 310 static uint64_t via_superio_cfg_read(void *opaque, hwaddr addr, unsigned size)
 311 {
 312     ViaSuperIOState *sc = opaque;
 313     uint8_t idx = sc->regs[0];
 314     uint8_t val = sc->regs[idx];
 315
 316     if (addr == 0) {
 317         return idx;
 318     }
 319     if (addr == 1 && idx == 0) {
 320         val = 0; /* reading reg 0 where we store index value */
 321     }
 322     trace_via_superio_read(idx, val);
 323     return val;
 324 }
 325
 326 static void via_superio_class_init(ObjectClass *klass, void *data)
 327 {
 328     DeviceClass *dc = DEVICE_CLASS(klass);
 329     ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass);
 330
 331     sc->parent_realize = dc->realize;
 332     dc->realize = via_superio_realize;
 333 }
 334
 335 static const TypeInfo via_superio_info = {
 336     .name          = TYPE_VIA_SUPERIO,
 337     .parent        = TYPE_ISA_SUPERIO,
 338     .instance_size = sizeof(ViaSuperIOState),
 339     .class_size    = sizeof(ISASuperIOClass),
 340     .class_init    = via_superio_class_init,
 341     .abstract      = true,
 342 };
 343
 344 #define TYPE_VT82C686B_SUPERIO "vt82c686b-superio"
 345
 346 static void vt82c686b_superio_cfg_write(void *opaque, hwaddr addr,
 347                                         uint64_t data, unsigned size)
 348 {
 349     ViaSuperIOState *sc = opaque;
 350     uint8_t idx = sc->regs[0];
 351
 352     if (addr == 0) { /* config index register */
 353         sc->regs[0] = data;
 354         return;
 355     }
 356
 357     /* config data register */
 358     trace_via_superio_write(idx, data);
 359     switch (idx) {
 360     case 0x00 ... 0xdf:
 361     case 0xe4:
 362     case 0xe5:
 363     case 0xe9 ... 0xed:
 364     case 0xf3:
 365     case 0xf5:
 366     case 0xf7:
 367     case 0xf9 ... 0xfb:
 368     case 0xfd ... 0xff:
 369         /* ignore write to read only registers */
 370         return;
 371     /* case 0xe6 ... 0xe8: Should set base port of parallel and serial */
 372     default:
 373         qemu_log_mask(LOG_UNIMP,
 374                       "via_superio_cfg: unimplemented register 0x%x\n", idx);
 375         break;
 376     }
 377     sc->regs[idx] = data;
 378 }
 379
 380 static const MemoryRegionOps vt82c686b_superio_cfg_ops = {
 381     .read = via_superio_cfg_read,
 382     .write = vt82c686b_superio_cfg_write,
 383     .endianness = DEVICE_NATIVE_ENDIAN,
 384     .impl = {
 385         .min_access_size = 1,
 386         .max_access_size = 1,
 387     },
 388 };
 389
 390 static void vt82c686b_superio_reset(DeviceState *dev)
 391 {
 392     ViaSuperIOState *s = VIA_SUPERIO(dev);
 393
 394     memset(s->regs, 0, sizeof(s->regs));
 395     /* Device ID */
 396     vt82c686b_superio_cfg_write(s, 0, 0xe0, 1);
 397     vt82c686b_superio_cfg_write(s, 1, 0x3c, 1);
 398     /* Function select - all disabled */
 399     vt82c686b_superio_cfg_write(s, 0, 0xe2, 1);
 400     vt82c686b_superio_cfg_write(s, 1, 0x03, 1);
 401     /* Floppy ctrl base addr 0x3f0-7 */
 402     vt82c686b_superio_cfg_write(s, 0, 0xe3, 1);
 403     vt82c686b_superio_cfg_write(s, 1, 0xfc, 1);
 404     /* Parallel port base addr 0x378-f */
 405     vt82c686b_superio_cfg_write(s, 0, 0xe6, 1);
 406     vt82c686b_superio_cfg_write(s, 1, 0xde, 1);
 407     /* Serial port 1 base addr 0x3f8-f */
 408     vt82c686b_superio_cfg_write(s, 0, 0xe7, 1);
 409     vt82c686b_superio_cfg_write(s, 1, 0xfe, 1);
 410     /* Serial port 2 base addr 0x2f8-f */
 411     vt82c686b_superio_cfg_write(s, 0, 0xe8, 1);
 412     vt82c686b_superio_cfg_write(s, 1, 0xbe, 1);
 413
 414     vt82c686b_superio_cfg_write(s, 0, 0, 1);
 415 }
 416
 417 static void vt82c686b_superio_init(Object *obj)
 418 {
 419     VIA_SUPERIO(obj)->io_ops = &vt82c686b_superio_cfg_ops;
 420 }
 421
 422 static void vt82c686b_superio_class_init(ObjectClass *klass, void *data)
 423 {
 424     DeviceClass *dc = DEVICE_CLASS(klass);
 425     ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass);
 426
 427     dc->reset = vt82c686b_superio_reset;
 428     sc->serial.count = 2;
 429     sc->parallel.count = 1;
 430     sc->ide.count = 0; /* emulated by via-ide */
 431     sc->floppy.count = 1;
 432 }
 433
 434 static const TypeInfo vt82c686b_superio_info = {
 435     .name          = TYPE_VT82C686B_SUPERIO,
 436     .parent        = TYPE_VIA_SUPERIO,
 437     .instance_size = sizeof(ViaSuperIOState),
 438     .instance_init = vt82c686b_superio_init,
 439     .class_size    = sizeof(ISASuperIOClass),
 440     .class_init    = vt82c686b_superio_class_init,
 441 };
 442
 443
 444 #define TYPE_VT8231_SUPERIO "vt8231-superio"
 445
 446 static void vt8231_superio_cfg_write(void *opaque, hwaddr addr,
 447                                      uint64_t data, unsigned size)
 448 {
 449     ViaSuperIOState *sc = opaque;
 450     uint8_t idx = sc->regs[0];
 451
 452     if (addr == 0) { /* config index register */
 453         sc->regs[0] = data;
 454         return;
 455     }
 456
 457     /* config data register */
 458     trace_via_superio_write(idx, data);
 459     switch (idx) {
 460     case 0x00 ... 0xdf:
 461     case 0xe7 ... 0xef:
 462     case 0xf0 ... 0xf1:
 463     case 0xf5:
 464     case 0xf8:
 465     case 0xfd:
 466         /* ignore write to read only registers */
 467         return;
 468     default:
 469         qemu_log_mask(LOG_UNIMP,
 470                       "via_superio_cfg: unimplemented register 0x%x\n", idx);
 471         break;
 472     }
 473     sc->regs[idx] = data;
 474 }
 475
 476 static const MemoryRegionOps vt8231_superio_cfg_ops = {
 477     .read = via_superio_cfg_read,
 478     .write = vt8231_superio_cfg_write,
 479     .endianness = DEVICE_NATIVE_ENDIAN,
 480     .impl = {
 481         .min_access_size = 1,
 482         .max_access_size = 1,
 483     },
 484 };
 485
 486 static void vt8231_superio_reset(DeviceState *dev)
 487 {
 488     ViaSuperIOState *s = VIA_SUPERIO(dev);
 489
 490     memset(s->regs, 0, sizeof(s->regs));
 491     /* Device ID */
 492     s->regs[0xf0] = 0x3c;
 493     /* Device revision */
 494     s->regs[0xf1] = 0x01;
 495     /* Function select - all disabled */
 496     vt8231_superio_cfg_write(s, 0, 0xf2, 1);
 497     vt8231_superio_cfg_write(s, 1, 0x03, 1);
 498     /* Serial port base addr */
 499     vt8231_superio_cfg_write(s, 0, 0xf4, 1);
 500     vt8231_superio_cfg_write(s, 1, 0xfe, 1);
 501     /* Parallel port base addr */
 502     vt8231_superio_cfg_write(s, 0, 0xf6, 1);
 503     vt8231_superio_cfg_write(s, 1, 0xde, 1);
 504     /* Floppy ctrl base addr */
 505     vt8231_superio_cfg_write(s, 0, 0xf7, 1);
 506     vt8231_superio_cfg_write(s, 1, 0xfc, 1);
 507
 508     vt8231_superio_cfg_write(s, 0, 0, 1);
 509 }
 510
 511 static void vt8231_superio_init(Object *obj)
 512 {
 513     VIA_SUPERIO(obj)->io_ops = &vt8231_superio_cfg_ops;
 514 }
 515
 516 static uint16_t vt8231_superio_serial_iobase(ISASuperIODevice *sio,
 517                                              uint8_t index)
 518 {
 519         return 0x2f8; /* FIXME: This should be settable via registers f2-f4 */
 520 }
 521
 522 static void vt8231_superio_class_init(ObjectClass *klass, void *data)
 523 {
 524     DeviceClass *dc = DEVICE_CLASS(klass);
 525     ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass);
 526
 527     dc->reset = vt8231_superio_reset;
 528     sc->serial.count = 1;
 529     sc->serial.get_iobase = vt8231_superio_serial_iobase;
 530     sc->parallel.count = 1;
 531     sc->ide.count = 0; /* emulated by via-ide */
 532     sc->floppy.count = 1;
 533 }
 534
 535 static const TypeInfo vt8231_superio_info = {
 536     .name          = TYPE_VT8231_SUPERIO,
 537     .parent        = TYPE_VIA_SUPERIO,
 538     .instance_size = sizeof(ViaSuperIOState),
 539     .instance_init = vt8231_superio_init,
 540     .class_size    = sizeof(ISASuperIOClass),
 541     .class_init    = vt8231_superio_class_init,
 542 };
 543
 544
 545 #define TYPE_VIA_ISA "via-isa"
 546 OBJECT_DECLARE_SIMPLE_TYPE(ViaISAState, VIA_ISA)
 547
 548 struct ViaISAState {
 549     PCIDevice dev;
 550     qemu_irq cpu_intr;
 551     qemu_irq *isa_irqs_in;
 552     ViaSuperIOState via_sio;
 553     MC146818RtcState rtc;
 554     PCIIDEState ide;
 555     UHCIState uhci[2];
 556     ViaPMState pm;
 557     ViaAC97State ac97;
 558     PCIDevice mc97;
 559 };
 560
 561 static const VMStateDescription vmstate_via = {
 562     .name = "via-isa",
 563     .version_id = 1,
 564     .minimum_version_id = 1,
 565     .fields = (VMStateField[]) {
 566         VMSTATE_PCI_DEVICE(dev, ViaISAState),
 567         VMSTATE_END_OF_LIST()
 568     }
 569 };
 570
 571 static void via_isa_init(Object *obj)
 572 {
 573     ViaISAState *s = VIA_ISA(obj);
 574
 575     object_initialize_child(obj, "rtc", &s->rtc, TYPE_MC146818_RTC);
 576     object_initialize_child(obj, "ide", &s->ide, TYPE_VIA_IDE);
 577     object_initialize_child(obj, "uhci1", &s->uhci[0], TYPE_VT82C686B_USB_UHCI);
 578     object_initialize_child(obj, "uhci2", &s->uhci[1], TYPE_VT82C686B_USB_UHCI);
 579     object_initialize_child(obj, "ac97", &s->ac97, TYPE_VIA_AC97);
 580     object_initialize_child(obj, "mc97", &s->mc97, TYPE_VIA_MC97);
 581 }
 582
 583 static const TypeInfo via_isa_info = {
 584     .name          = TYPE_VIA_ISA,
 585     .parent        = TYPE_PCI_DEVICE,
 586     .instance_size = sizeof(ViaISAState),
 587     .instance_init = via_isa_init,
 588     .abstract      = true,
 589     .interfaces    = (InterfaceInfo[]) {
 590         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 591         { },
 592     },
 593 };
 594
 595 void via_isa_set_irq(PCIDevice *d, int n, int level)
 596 {
 597     ViaISAState *s = VIA_ISA(d);
 598     qemu_set_irq(s->isa_irqs_in[n], level);
 599 }
 600
 601 static void via_isa_request_i8259_irq(void *opaque, int irq, int level)
 602 {
 603     ViaISAState *s = opaque;
 604     qemu_set_irq(s->cpu_intr, level);
 605 }
 606
 607 static int via_isa_get_pci_irq(const ViaISAState *s, int irq_num)
 608 {
 609     switch (irq_num) {
 610     case 0:
 611         return s->dev.config[0x55] >> 4;
 612     case 1:
 613         return s->dev.config[0x56] & 0xf;
 614     case 2:
 615         return s->dev.config[0x56] >> 4;
 616     case 3:
 617         return s->dev.config[0x57] >> 4;
 618     }
 619     return 0;
 620 }
 621
 622 static void via_isa_set_pci_irq(void *opaque, int irq_num, int level)
 623 {
 624     ViaISAState *s = opaque;
 625     PCIBus *bus = pci_get_bus(&s->dev);
 626     int i, pic_level, pic_irq = via_isa_get_pci_irq(s, irq_num);
 627
 628     /* IRQ 0: disabled, IRQ 2,8,13: reserved */
 629     if (!pic_irq) {
 630         return;
 631     }
 632     if (unlikely(pic_irq == 2 || pic_irq == 8 || pic_irq == 13)) {
 633         qemu_log_mask(LOG_GUEST_ERROR, "Invalid ISA IRQ routing");
 634     }
 635
 636     /* The pic level is the logical OR of all the PCI irqs mapped to it. */
 637     pic_level = 0;
 638     for (i = 0; i < PCI_NUM_PINS; i++) {
 639         if (pic_irq == via_isa_get_pci_irq(s, i)) {
 640             pic_level |= pci_bus_get_irq_level(bus, i);
 641         }
 642     }
 643     /* Now we change the pic irq level according to the via irq mappings. */
 644     qemu_set_irq(s->isa_irqs_in[pic_irq], pic_level);
 645 }
 646
 647 static void via_isa_realize(PCIDevice *d, Error **errp)
 648 {
 649     ViaISAState *s = VIA_ISA(d);
 650     DeviceState *dev = DEVICE(d);
 651     PCIBus *pci_bus = pci_get_bus(d);
 652     qemu_irq *isa_irq;
 653     ISABus *isa_bus;
 654     int i;
 655
 656     qdev_init_gpio_out(dev, &s->cpu_intr, 1);
 657     isa_irq = qemu_allocate_irqs(via_isa_request_i8259_irq, s, 1);
 658     isa_bus = isa_bus_new(dev, pci_address_space(d), pci_address_space_io(d),
 659                           errp);
 660
 661     if (!isa_bus) {
 662         return;
 663     }
 664
 665     s->isa_irqs_in = i8259_init(isa_bus, *isa_irq);
 666     isa_bus_register_input_irqs(isa_bus, s->isa_irqs_in);
 667     i8254_pit_init(isa_bus, 0x40, 0, NULL);
 668     i8257_dma_init(isa_bus, 0);
 669
 670     qdev_init_gpio_in_named(dev, via_isa_set_pci_irq, "pirq", PCI_NUM_PINS);
 671
 672     /* RTC */
 673     qdev_prop_set_int32(DEVICE(&s->rtc), "base_year", 2000);
 674     if (!qdev_realize(DEVICE(&s->rtc), BUS(isa_bus), errp)) {
 675         return;
 676     }
 677     isa_connect_gpio_out(ISA_DEVICE(&s->rtc), 0, s->rtc.isairq);
 678
 679     for (i = 0; i < PCI_CONFIG_HEADER_SIZE; i++) {
 680         if (i < PCI_COMMAND || i >= PCI_REVISION_ID) {
 681             d->wmask[i] = 0;
 682         }
 683     }
 684
 685     /* Super I/O */
 686     if (!qdev_realize(DEVICE(&s->via_sio), BUS(isa_bus), errp)) {
 687         return;
 688     }
 689
 690     /* Function 1: IDE */
 691     qdev_prop_set_int32(DEVICE(&s->ide), "addr", d->devfn + 1);
 692     if (!qdev_realize(DEVICE(&s->ide), BUS(pci_bus), errp)) {
 693         return;
 694     }
 695
 696     /* Functions 2-3: USB Ports */
 697     for (i = 0; i < ARRAY_SIZE(s->uhci); i++) {
 698         qdev_prop_set_int32(DEVICE(&s->uhci[i]), "addr", d->devfn + 2 + i);
 699         if (!qdev_realize(DEVICE(&s->uhci[i]), BUS(pci_bus), errp)) {
 700             return;
 701         }
 702     }
 703
 704     /* Function 4: Power Management */
 705     qdev_prop_set_int32(DEVICE(&s->pm), "addr", d->devfn + 4);
 706     if (!qdev_realize(DEVICE(&s->pm), BUS(pci_bus), errp)) {
 707         return;
 708     }
 709
 710     /* Function 5: AC97 Audio */
 711     qdev_prop_set_int32(DEVICE(&s->ac97), "addr", d->devfn + 5);
 712     if (!qdev_realize(DEVICE(&s->ac97), BUS(pci_bus), errp)) {
 713         return;
 714     }
 715
 716     /* Function 6: MC97 Modem */
 717     qdev_prop_set_int32(DEVICE(&s->mc97), "addr", d->devfn + 6);
 718     if (!qdev_realize(DEVICE(&s->mc97), BUS(pci_bus), errp)) {
 719         return;
 720     }
 721 }
 722
 723 /* TYPE_VT82C686B_ISA */
 724
 725 static void vt82c686b_write_config(PCIDevice *d, uint32_t addr,
 726                                    uint32_t val, int len)
 727 {
 728     ViaISAState *s = VIA_ISA(d);
 729
 730     trace_via_isa_write(addr, val, len);
 731     pci_default_write_config(d, addr, val, len);
 732     if (addr == 0x85) {
 733         /* BIT(1): enable or disable superio config io ports */
 734         via_superio_io_enable(&s->via_sio, val & BIT(1));
 735     }
 736 }
 737
 738 static void vt82c686b_isa_reset(DeviceState *dev)
 739 {
 740     ViaISAState *s = VIA_ISA(dev);
 741     uint8_t *pci_conf = s->dev.config;
 742
 743     pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0);
 744     pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
 745                  PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL);
 746     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM);
 747
 748     pci_conf[0x48] = 0x01; /* Miscellaneous Control 3 */
 749     pci_conf[0x4a] = 0x04; /* IDE interrupt Routing */
 750     pci_conf[0x4f] = 0x03; /* DMA/Master Mem Access Control 3 */
 751     pci_conf[0x50] = 0x2d; /* PnP DMA Request Control */
 752     pci_conf[0x59] = 0x04;
 753     pci_conf[0x5a] = 0x04; /* KBC/RTC Control*/
 754     pci_conf[0x5f] = 0x04;
 755     pci_conf[0x77] = 0x10; /* GPIO Control 1/2/3/4 */
 756 }
 757
 758 static void vt82c686b_init(Object *obj)
 759 {
 760     ViaISAState *s = VIA_ISA(obj);
 761
 762     object_initialize_child(obj, "sio", &s->via_sio, TYPE_VT82C686B_SUPERIO);
 763     object_initialize_child(obj, "pm", &s->pm, TYPE_VT82C686B_PM);
 764 }
 765
 766 static void vt82c686b_class_init(ObjectClass *klass, void *data)
 767 {
 768     DeviceClass *dc = DEVICE_CLASS(klass);
 769     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 770
 771     k->realize = via_isa_realize;
 772     k->config_write = vt82c686b_write_config;
 773     k->vendor_id = PCI_VENDOR_ID_VIA;
 774     k->device_id = PCI_DEVICE_ID_VIA_82C686B_ISA;
 775     k->class_id = PCI_CLASS_BRIDGE_ISA;
 776     k->revision = 0x40;
 777     dc->reset = vt82c686b_isa_reset;
 778     dc->desc = "ISA bridge";
 779     dc->vmsd = &vmstate_via;
 780     /* Reason: part of VIA VT82C686 southbridge, needs to be wired up */
 781     dc->user_creatable = false;
 782 }
 783
 784 static const TypeInfo vt82c686b_isa_info = {
 785     .name          = TYPE_VT82C686B_ISA,
 786     .parent        = TYPE_VIA_ISA,
 787     .instance_size = sizeof(ViaISAState),
 788     .instance_init = vt82c686b_init,
 789     .class_init    = vt82c686b_class_init,
 790 };
 791
 792 /* TYPE_VT8231_ISA */
 793
 794 static void vt8231_write_config(PCIDevice *d, uint32_t addr,
 795                                 uint32_t val, int len)
 796 {
 797     ViaISAState *s = VIA_ISA(d);
 798
 799     trace_via_isa_write(addr, val, len);
 800     pci_default_write_config(d, addr, val, len);
 801     if (addr == 0x50) {
 802         /* BIT(2): enable or disable superio config io ports */
 803         via_superio_io_enable(&s->via_sio, val & BIT(2));
 804     }
 805 }
 806
 807 static void vt8231_isa_reset(DeviceState *dev)
 808 {
 809     ViaISAState *s = VIA_ISA(dev);
 810     uint8_t *pci_conf = s->dev.config;
 811
 812     pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0);
 813     pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
 814                  PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL);
 815     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM);
 816
 817     pci_conf[0x58] = 0x40; /* Miscellaneous Control 0 */
 818     pci_conf[0x67] = 0x08; /* Fast IR Config */
 819     pci_conf[0x6b] = 0x01; /* Fast IR I/O Base */
 820 }
 821
 822 static void vt8231_init(Object *obj)
 823 {
 824     ViaISAState *s = VIA_ISA(obj);
 825
 826     object_initialize_child(obj, "sio", &s->via_sio, TYPE_VT8231_SUPERIO);
 827     object_initialize_child(obj, "pm", &s->pm, TYPE_VT8231_PM);
 828 }
 829
 830 static void vt8231_class_init(ObjectClass *klass, void *data)
 831 {
 832     DeviceClass *dc = DEVICE_CLASS(klass);
 833     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 834
 835     k->realize = via_isa_realize;
 836     k->config_write = vt8231_write_config;
 837     k->vendor_id = PCI_VENDOR_ID_VIA;
 838     k->device_id = PCI_DEVICE_ID_VIA_8231_ISA;
 839     k->class_id = PCI_CLASS_BRIDGE_ISA;
 840     k->revision = 0x10;
 841     dc->reset = vt8231_isa_reset;
 842     dc->desc = "ISA bridge";
 843     dc->vmsd = &vmstate_via;
 844     /* Reason: part of VIA VT8231 southbridge, needs to be wired up */
 845     dc->user_creatable = false;
 846 }
 847
 848 static const TypeInfo vt8231_isa_info = {
 849     .name          = TYPE_VT8231_ISA,
 850     .parent        = TYPE_VIA_ISA,
 851     .instance_size = sizeof(ViaISAState),
 852     .instance_init = vt8231_init,
 853     .class_init    = vt8231_class_init,
 854 };
 855
 856
 857 static void vt82c686b_register_types(void)
 858 {
 859     type_register_static(&via_pm_info);
 860     type_register_static(&vt82c686b_pm_info);
 861     type_register_static(&vt8231_pm_info);
 862     type_register_static(&via_superio_info);
 863     type_register_static(&vt82c686b_superio_info);
 864     type_register_static(&vt8231_superio_info);
 865     type_register_static(&via_isa_info);
 866     type_register_static(&vt82c686b_isa_info);
 867     type_register_static(&vt8231_isa_info);
 868 }
 869
 870 type_init(vt82c686b_register_types)