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
  13 #include "qemu/osdep.h"
  14 #include "hw/isa/vt82c686.h"
  15 #include "hw/i2c/i2c.h"
  16 #include "hw/pci/pci.h"
  17 #include "hw/qdev-properties.h"
  18 #include "hw/isa/isa.h"
  19 #include "hw/isa/superio.h"
  20 #include "hw/sysbus.h"
  21 #include "migration/vmstate.h"
  22 #include "hw/mips/mips.h"
  23 #include "hw/isa/apm.h"
  24 #include "hw/acpi/acpi.h"
  25 #include "hw/i2c/pm_smbus.h"
  26 #include "qapi/error.h"
  27 #include "qemu/module.h"
  28 #include "qemu/timer.h"
  29 #include "exec/address-spaces.h"
  30
  31 /* #define DEBUG_VT82C686B */
  32
  33 #ifdef DEBUG_VT82C686B
  34 #define DPRINTF(fmt, ...) fprintf(stderr, "%s: " fmt, __func__, ##__VA_ARGS__)
  35 #else
  36 #define DPRINTF(fmt, ...)
  37 #endif
  38
  39 typedef struct SuperIOConfig {
  40     uint8_t config[0x100];
  41     uint8_t index;
  42     uint8_t data;
  43 } SuperIOConfig;
  44
  45 typedef struct VT82C686BState {
  46     PCIDevice dev;
  47     MemoryRegion superio;
  48     SuperIOConfig superio_conf;
  49 } VT82C686BState;
  50
  51 #define TYPE_VT82C686B_DEVICE "VT82C686B"
  52 #define VT82C686B_DEVICE(obj) \
  53     OBJECT_CHECK(VT82C686BState, (obj), TYPE_VT82C686B_DEVICE)
  54
  55 static void superio_ioport_writeb(void *opaque, hwaddr addr, uint64_t data,
  56                                   unsigned size)
  57 {
  58     SuperIOConfig *superio_conf = opaque;
  59
  60     DPRINTF("superio_ioport_writeb  address 0x%x  val 0x%x\n", addr, data);
  61     if (addr == 0x3f0) {
  62         superio_conf->index = data & 0xff;
  63     } else {
  64         bool can_write = true;
  65         /* 0x3f1 */
  66         switch (superio_conf->index) {
  67         case 0x00 ... 0xdf:
  68         case 0xe4:
  69         case 0xe5:
  70         case 0xe9 ... 0xed:
  71         case 0xf3:
  72         case 0xf5:
  73         case 0xf7:
  74         case 0xf9 ... 0xfb:
  75         case 0xfd ... 0xff:
  76             can_write = false;
  77             break;
  78         case 0xe7:
  79             if ((data & 0xff) != 0xfe) {
  80                 DPRINTF("change uart 1 base. unsupported yet\n");
  81                 can_write = false;
  82             }
  83             break;
  84         case 0xe8:
  85             if ((data & 0xff) != 0xbe) {
  86                 DPRINTF("change uart 2 base. unsupported yet\n");
  87                 can_write = false;
  88             }
  89             break;
  90         default:
  91             break;
  92
  93         }
  94         if (can_write) {
  95             superio_conf->config[superio_conf->index] = data & 0xff;
  96         }
  97     }
  98 }
  99
 100 static uint64_t superio_ioport_readb(void *opaque, hwaddr addr, unsigned size)
 101 {
 102     SuperIOConfig *superio_conf = opaque;
 103
 104     DPRINTF("superio_ioport_readb  address 0x%x\n", addr);
 105     return superio_conf->config[superio_conf->index];
 106 }
 107
 108 static const MemoryRegionOps superio_ops = {
 109     .read = superio_ioport_readb,
 110     .write = superio_ioport_writeb,
 111     .endianness = DEVICE_NATIVE_ENDIAN,
 112     .impl = {
 113         .min_access_size = 1,
 114         .max_access_size = 1,
 115     },
 116 };
 117
 118 static void vt82c686b_isa_reset(DeviceState *dev)
 119 {
 120     VT82C686BState *vt82c = VT82C686B_DEVICE(dev);
 121     uint8_t *pci_conf = vt82c->dev.config;
 122
 123     pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0);
 124     pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
 125                  PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL);
 126     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM);
 127
 128     pci_conf[0x48] = 0x01; /* Miscellaneous Control 3 */
 129     pci_conf[0x4a] = 0x04; /* IDE interrupt Routing */
 130     pci_conf[0x4f] = 0x03; /* DMA/Master Mem Access Control 3 */
 131     pci_conf[0x50] = 0x2d; /* PnP DMA Request Control */
 132     pci_conf[0x59] = 0x04;
 133     pci_conf[0x5a] = 0x04; /* KBC/RTC Control*/
 134     pci_conf[0x5f] = 0x04;
 135     pci_conf[0x77] = 0x10; /* GPIO Control 1/2/3/4 */
 136
 137     vt82c->superio_conf.config[0xe0] = 0x3c;
 138     vt82c->superio_conf.config[0xe2] = 0x03;
 139     vt82c->superio_conf.config[0xe3] = 0xfc;
 140     vt82c->superio_conf.config[0xe6] = 0xde;
 141     vt82c->superio_conf.config[0xe7] = 0xfe;
 142     vt82c->superio_conf.config[0xe8] = 0xbe;
 143 }
 144
 145 /* write config pci function0 registers. PCI-ISA bridge */
 146 static void vt82c686b_write_config(PCIDevice *d, uint32_t address,
 147                                    uint32_t val, int len)
 148 {
 149     VT82C686BState *vt686 = VT82C686B_DEVICE(d);
 150
 151     DPRINTF("vt82c686b_write_config  address 0x%x  val 0x%x len 0x%x\n",
 152            address, val, len);
 153
 154     pci_default_write_config(d, address, val, len);
 155     if (address == 0x85) {  /* enable or disable super IO configure */
 156         memory_region_set_enabled(&vt686->superio, val & 0x2);
 157     }
 158 }
 159
 160 #define ACPI_DBG_IO_ADDR  0xb044
 161
 162 typedef struct VT686PMState {
 163     PCIDevice dev;
 164     MemoryRegion io;
 165     ACPIREGS ar;
 166     APMState apm;
 167     PMSMBus smb;
 168     uint32_t smb_io_base;
 169 } VT686PMState;
 170
 171 typedef struct VT686AC97State {
 172     PCIDevice dev;
 173 } VT686AC97State;
 174
 175 typedef struct VT686MC97State {
 176     PCIDevice dev;
 177 } VT686MC97State;
 178
 179 #define TYPE_VT82C686B_PM_DEVICE "VT82C686B_PM"
 180 #define VT82C686B_PM_DEVICE(obj) \
 181     OBJECT_CHECK(VT686PMState, (obj), TYPE_VT82C686B_PM_DEVICE)
 182
 183 #define TYPE_VT82C686B_MC97_DEVICE "VT82C686B_MC97"
 184 #define VT82C686B_MC97_DEVICE(obj) \
 185     OBJECT_CHECK(VT686MC97State, (obj), TYPE_VT82C686B_MC97_DEVICE)
 186
 187 #define TYPE_VT82C686B_AC97_DEVICE "VT82C686B_AC97"
 188 #define VT82C686B_AC97_DEVICE(obj) \
 189     OBJECT_CHECK(VT686AC97State, (obj), TYPE_VT82C686B_AC97_DEVICE)
 190
 191 static void pm_update_sci(VT686PMState *s)
 192 {
 193     int sci_level, pmsts;
 194
 195     pmsts = acpi_pm1_evt_get_sts(&s->ar);
 196     sci_level = (((pmsts & s->ar.pm1.evt.en) &
 197                   (ACPI_BITMASK_RT_CLOCK_ENABLE |
 198                    ACPI_BITMASK_POWER_BUTTON_ENABLE |
 199                    ACPI_BITMASK_GLOBAL_LOCK_ENABLE |
 200                    ACPI_BITMASK_TIMER_ENABLE)) != 0);
 201     pci_set_irq(&s->dev, sci_level);
 202     /* schedule a timer interruption if needed */
 203     acpi_pm_tmr_update(&s->ar, (s->ar.pm1.evt.en & ACPI_BITMASK_TIMER_ENABLE) &&
 204                        !(pmsts & ACPI_BITMASK_TIMER_STATUS));
 205 }
 206
 207 static void pm_tmr_timer(ACPIREGS *ar)
 208 {
 209     VT686PMState *s = container_of(ar, VT686PMState, ar);
 210     pm_update_sci(s);
 211 }
 212
 213 static void pm_io_space_update(VT686PMState *s)
 214 {
 215     uint32_t pm_io_base;
 216
 217     pm_io_base = pci_get_long(s->dev.config + 0x40);
 218     pm_io_base &= 0xffc0;
 219
 220     memory_region_transaction_begin();
 221     memory_region_set_enabled(&s->io, s->dev.config[0x80] & 1);
 222     memory_region_set_address(&s->io, pm_io_base);
 223     memory_region_transaction_commit();
 224 }
 225
 226 static void pm_write_config(PCIDevice *d,
 227                             uint32_t address, uint32_t val, int len)
 228 {
 229     DPRINTF("pm_write_config  address 0x%x  val 0x%x len 0x%x\n",
 230            address, val, len);
 231     pci_default_write_config(d, address, val, len);
 232 }
 233
 234 static int vmstate_acpi_post_load(void *opaque, int version_id)
 235 {
 236     VT686PMState *s = opaque;
 237
 238     pm_io_space_update(s);
 239     return 0;
 240 }
 241
 242 static const VMStateDescription vmstate_acpi = {
 243     .name = "vt82c686b_pm",
 244     .version_id = 1,
 245     .minimum_version_id = 1,
 246     .post_load = vmstate_acpi_post_load,
 247     .fields = (VMStateField[]) {
 248         VMSTATE_PCI_DEVICE(dev, VT686PMState),
 249         VMSTATE_UINT16(ar.pm1.evt.sts, VT686PMState),
 250         VMSTATE_UINT16(ar.pm1.evt.en, VT686PMState),
 251         VMSTATE_UINT16(ar.pm1.cnt.cnt, VT686PMState),
 252         VMSTATE_STRUCT(apm, VT686PMState, 0, vmstate_apm, APMState),
 253         VMSTATE_TIMER_PTR(ar.tmr.timer, VT686PMState),
 254         VMSTATE_INT64(ar.tmr.overflow_time, VT686PMState),
 255         VMSTATE_END_OF_LIST()
 256     }
 257 };
 258
 259 /*
 260  * TODO: vt82c686b_ac97_init() and vt82c686b_mc97_init()
 261  * just register a PCI device now, functionalities will be implemented later.
 262  */
 263
 264 static void vt82c686b_ac97_realize(PCIDevice *dev, Error **errp)
 265 {
 266     VT686AC97State *s = VT82C686B_AC97_DEVICE(dev);
 267     uint8_t *pci_conf = s->dev.config;
 268
 269     pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_INVALIDATE |
 270                  PCI_COMMAND_PARITY);
 271     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_CAP_LIST |
 272                  PCI_STATUS_DEVSEL_MEDIUM);
 273     pci_set_long(pci_conf + PCI_INTERRUPT_PIN, 0x03);
 274 }
 275
 276 void vt82c686b_ac97_init(PCIBus *bus, int devfn)
 277 {
 278     PCIDevice *dev;
 279
 280     dev = pci_new(devfn, TYPE_VT82C686B_AC97_DEVICE);
 281     pci_realize_and_unref(dev, bus, &error_fatal);
 282 }
 283
 284 static void via_ac97_class_init(ObjectClass *klass, void *data)
 285 {
 286     DeviceClass *dc = DEVICE_CLASS(klass);
 287     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 288
 289     k->realize = vt82c686b_ac97_realize;
 290     k->vendor_id = PCI_VENDOR_ID_VIA;
 291     k->device_id = PCI_DEVICE_ID_VIA_AC97;
 292     k->revision = 0x50;
 293     k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
 294     set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
 295     dc->desc = "AC97";
 296 }
 297
 298 static const TypeInfo via_ac97_info = {
 299     .name          = TYPE_VT82C686B_AC97_DEVICE,
 300     .parent        = TYPE_PCI_DEVICE,
 301     .instance_size = sizeof(VT686AC97State),
 302     .class_init    = via_ac97_class_init,
 303     .interfaces = (InterfaceInfo[]) {
 304         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 305         { },
 306     },
 307 };
 308
 309 static void vt82c686b_mc97_realize(PCIDevice *dev, Error **errp)
 310 {
 311     VT686MC97State *s = VT82C686B_MC97_DEVICE(dev);
 312     uint8_t *pci_conf = s->dev.config;
 313
 314     pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_INVALIDATE |
 315                  PCI_COMMAND_VGA_PALETTE);
 316     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM);
 317     pci_set_long(pci_conf + PCI_INTERRUPT_PIN, 0x03);
 318 }
 319
 320 void vt82c686b_mc97_init(PCIBus *bus, int devfn)
 321 {
 322     PCIDevice *dev;
 323
 324     dev = pci_new(devfn, TYPE_VT82C686B_MC97_DEVICE);
 325     pci_realize_and_unref(dev, bus, &error_fatal);
 326 }
 327
 328 static void via_mc97_class_init(ObjectClass *klass, void *data)
 329 {
 330     DeviceClass *dc = DEVICE_CLASS(klass);
 331     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 332
 333     k->realize = vt82c686b_mc97_realize;
 334     k->vendor_id = PCI_VENDOR_ID_VIA;
 335     k->device_id = PCI_DEVICE_ID_VIA_MC97;
 336     k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
 337     k->revision = 0x30;
 338     set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
 339     dc->desc = "MC97";
 340 }
 341
 342 static const TypeInfo via_mc97_info = {
 343     .name          = TYPE_VT82C686B_MC97_DEVICE,
 344     .parent        = TYPE_PCI_DEVICE,
 345     .instance_size = sizeof(VT686MC97State),
 346     .class_init    = via_mc97_class_init,
 347     .interfaces = (InterfaceInfo[]) {
 348         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 349         { },
 350     },
 351 };
 352
 353 /* vt82c686 pm init */
 354 static void vt82c686b_pm_realize(PCIDevice *dev, Error **errp)
 355 {
 356     VT686PMState *s = VT82C686B_PM_DEVICE(dev);
 357     uint8_t *pci_conf;
 358
 359     pci_conf = s->dev.config;
 360     pci_set_word(pci_conf + PCI_COMMAND, 0);
 361     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK |
 362                  PCI_STATUS_DEVSEL_MEDIUM);
 363
 364     /* 0x48-0x4B is Power Management I/O Base */
 365     pci_set_long(pci_conf + 0x48, 0x00000001);
 366
 367     /* SMB ports:0xeee0~0xeeef */
 368     s->smb_io_base = ((s->smb_io_base & 0xfff0) + 0x0);
 369     pci_conf[0x90] = s->smb_io_base | 1;
 370     pci_conf[0x91] = s->smb_io_base >> 8;
 371     pci_conf[0xd2] = 0x90;
 372     pm_smbus_init(DEVICE(s), &s->smb, false);
 373     memory_region_add_subregion(get_system_io(), s->smb_io_base, &s->smb.io);
 374
 375     apm_init(dev, &s->apm, NULL, s);
 376
 377     memory_region_init(&s->io, OBJECT(dev), "vt82c686-pm", 64);
 378     memory_region_set_enabled(&s->io, false);
 379     memory_region_add_subregion(get_system_io(), 0, &s->io);
 380
 381     acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io);
 382     acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io);
 383     acpi_pm1_cnt_init(&s->ar, &s->io, false, false, 2);
 384 }
 385
 386 I2CBus *vt82c686b_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
 387                           qemu_irq sci_irq)
 388 {
 389     PCIDevice *dev;
 390     VT686PMState *s;
 391
 392     dev = pci_new(devfn, TYPE_VT82C686B_PM_DEVICE);
 393     qdev_prop_set_uint32(&dev->qdev, "smb_io_base", smb_io_base);
 394
 395     s = VT82C686B_PM_DEVICE(dev);
 396
 397     pci_realize_and_unref(dev, bus, &error_fatal);
 398
 399     return s->smb.smbus;
 400 }
 401
 402 static Property via_pm_properties[] = {
 403     DEFINE_PROP_UINT32("smb_io_base", VT686PMState, smb_io_base, 0),
 404     DEFINE_PROP_END_OF_LIST(),
 405 };
 406
 407 static void via_pm_class_init(ObjectClass *klass, void *data)
 408 {
 409     DeviceClass *dc = DEVICE_CLASS(klass);
 410     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 411
 412     k->realize = vt82c686b_pm_realize;
 413     k->config_write = pm_write_config;
 414     k->vendor_id = PCI_VENDOR_ID_VIA;
 415     k->device_id = PCI_DEVICE_ID_VIA_ACPI;
 416     k->class_id = PCI_CLASS_BRIDGE_OTHER;
 417     k->revision = 0x40;
 418     dc->desc = "PM";
 419     dc->vmsd = &vmstate_acpi;
 420     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 421     device_class_set_props(dc, via_pm_properties);
 422 }
 423
 424 static const TypeInfo via_pm_info = {
 425     .name          = TYPE_VT82C686B_PM_DEVICE,
 426     .parent        = TYPE_PCI_DEVICE,
 427     .instance_size = sizeof(VT686PMState),
 428     .class_init    = via_pm_class_init,
 429     .interfaces = (InterfaceInfo[]) {
 430         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 431         { },
 432     },
 433 };
 434
 435 static const VMStateDescription vmstate_via = {
 436     .name = "vt82c686b",
 437     .version_id = 1,
 438     .minimum_version_id = 1,
 439     .fields = (VMStateField[]) {
 440         VMSTATE_PCI_DEVICE(dev, VT82C686BState),
 441         VMSTATE_END_OF_LIST()
 442     }
 443 };
 444
 445 /* init the PCI-to-ISA bridge */
 446 static void vt82c686b_realize(PCIDevice *d, Error **errp)
 447 {
 448     VT82C686BState *vt82c = VT82C686B_DEVICE(d);
 449     uint8_t *pci_conf;
 450     ISABus *isa_bus;
 451     uint8_t *wmask;
 452     int i;
 453
 454     isa_bus = isa_bus_new(DEVICE(d), get_system_memory(),
 455                           pci_address_space_io(d), errp);
 456     if (!isa_bus) {
 457         return;
 458     }
 459
 460     pci_conf = d->config;
 461     pci_config_set_prog_interface(pci_conf, 0x0);
 462
 463     wmask = d->wmask;
 464     for (i = 0x00; i < 0xff; i++) {
 465         if (i <= 0x03 || (i >= 0x08 && i <= 0x3f)) {
 466             wmask[i] = 0x00;
 467         }
 468     }
 469
 470     memory_region_init_io(&vt82c->superio, OBJECT(d), &superio_ops,
 471                           &vt82c->superio_conf, "superio", 2);
 472     memory_region_set_enabled(&vt82c->superio, false);
 473     /*
 474      * The floppy also uses 0x3f0 and 0x3f1.
 475      * But we do not emulate a floppy, so just set it here.
 476      */
 477     memory_region_add_subregion(isa_bus->address_space_io, 0x3f0,
 478                                 &vt82c->superio);
 479 }
 480
 481 ISABus *vt82c686b_isa_init(PCIBus *bus, int devfn)
 482 {
 483     PCIDevice *d;
 484
 485     d = pci_create_simple_multifunction(bus, devfn, true,
 486                                         TYPE_VT82C686B_DEVICE);
 487
 488     return ISA_BUS(qdev_get_child_bus(DEVICE(d), "isa.0"));
 489 }
 490
 491 static void via_class_init(ObjectClass *klass, void *data)
 492 {
 493     DeviceClass *dc = DEVICE_CLASS(klass);
 494     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 495
 496     k->realize = vt82c686b_realize;
 497     k->config_write = vt82c686b_write_config;
 498     k->vendor_id = PCI_VENDOR_ID_VIA;
 499     k->device_id = PCI_DEVICE_ID_VIA_ISA_BRIDGE;
 500     k->class_id = PCI_CLASS_BRIDGE_ISA;
 501     k->revision = 0x40;
 502     dc->reset = vt82c686b_isa_reset;
 503     dc->desc = "ISA bridge";
 504     dc->vmsd = &vmstate_via;
 505     /*
 506      * Reason: part of VIA VT82C686 southbridge, needs to be wired up,
 507      * e.g. by mips_fuloong2e_init()
 508      */
 509     dc->user_creatable = false;
 510 }
 511
 512 static const TypeInfo via_info = {
 513     .name          = TYPE_VT82C686B_DEVICE,
 514     .parent        = TYPE_PCI_DEVICE,
 515     .instance_size = sizeof(VT82C686BState),
 516     .class_init    = via_class_init,
 517     .interfaces = (InterfaceInfo[]) {
 518         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 519         { },
 520     },
 521 };
 522
 523 static void vt82c686b_superio_class_init(ObjectClass *klass, void *data)
 524 {
 525     ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass);
 526
 527     sc->serial.count = 2;
 528     sc->parallel.count = 1;
 529     sc->ide.count = 0;
 530     sc->floppy.count = 1;
 531 }
 532
 533 static const TypeInfo via_superio_info = {
 534     .name          = TYPE_VT82C686B_SUPERIO,
 535     .parent        = TYPE_ISA_SUPERIO,
 536     .instance_size = sizeof(ISASuperIODevice),
 537     .class_size    = sizeof(ISASuperIOClass),
 538     .class_init    = vt82c686b_superio_class_init,
 539 };
 540
 541 static void vt82c686b_register_types(void)
 542 {
 543     type_register_static(&via_ac97_info);
 544     type_register_static(&via_mc97_info);
 545     type_register_static(&via_pm_info);
 546     type_register_static(&via_superio_info);
 547     type_register_static(&via_info);
 548 }
 549
 550 type_init(vt82c686b_register_types)