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 "hw/hw.h"
  14 #include "hw/i386/pc.h"
  15 #include "hw/isa/vt82c686.h"
  16 #include "hw/i2c/i2c.h"
  17 #include "hw/i2c/smbus.h"
  18 #include "hw/pci/pci.h"
  19 #include "hw/isa/isa.h"
  20 #include "hw/sysbus.h"
  21 #include "hw/mips/mips.h"
  22 #include "hw/isa/apm.h"
  23 #include "hw/acpi/acpi.h"
  24 #include "hw/i2c/pm_smbus.h"
  25 #include "sysemu/sysemu.h"
  26 #include "qemu/timer.h"
  27 #include "exec/address-spaces.h"
  28
  29 //#define DEBUG_VT82C686B
  30
  31 #ifdef DEBUG_VT82C686B
  32 #define DPRINTF(fmt, ...) fprintf(stderr, "%s: " fmt, __FUNCTION__, ##__VA_ARGS__)
  33 #else
  34 #define DPRINTF(fmt, ...)
  35 #endif
  36
  37 typedef struct SuperIOConfig
  38 {
  39     uint8_t config[0x100];
  40     uint8_t index;
  41     uint8_t data;
  42 } SuperIOConfig;
  43
  44 typedef struct VT82C686BState {
  45     PCIDevice dev;
  46     MemoryRegion superio;
  47     SuperIOConfig superio_conf;
  48 } VT82C686BState;
  49
  50 #define TYPE_VT82C686B_DEVICE "VT82C686B"
  51 #define VT82C686B_DEVICE(obj) \
  52     OBJECT_CHECK(VT82C686BState, (obj), TYPE_VT82C686B_DEVICE)
  53
  54 static void superio_ioport_writeb(void *opaque, hwaddr addr, uint64_t data,
  55                                   unsigned size)
  56 {
  57     SuperIOConfig *superio_conf = opaque;
  58
  59     DPRINTF("superio_ioport_writeb  address 0x%x  val 0x%x\n", addr, data);
  60     if (addr == 0x3f0) {
  61         superio_conf->index = data & 0xff;
  62     } else {
  63         bool can_write = true;
  64         /* 0x3f1 */
  65         switch (superio_conf->index) {
  66         case 0x00 ... 0xdf:
  67         case 0xe4:
  68         case 0xe5:
  69         case 0xe9 ... 0xed:
  70         case 0xf3:
  71         case 0xf5:
  72         case 0xf7:
  73         case 0xf9 ... 0xfb:
  74         case 0xfd ... 0xff:
  75             can_write = false;
  76             break;
  77         case 0xe7:
  78             if ((data & 0xff) != 0xfe) {
  79                 DPRINTF("change uart 1 base. unsupported yet\n");
  80                 can_write = false;
  81             }
  82             break;
  83         case 0xe8:
  84             if ((data & 0xff) != 0xbe) {
  85                 DPRINTF("change uart 2 base. unsupported yet\n");
  86                 can_write = false;
  87             }
  88             break;
  89         default:
  90             break;
  91
  92         }
  93         if (can_write) {
  94             superio_conf->config[superio_conf->index] = data & 0xff;
  95         }
  96     }
  97 }
  98
  99 static uint64_t superio_ioport_readb(void *opaque, hwaddr addr, unsigned size)
 100 {
 101     SuperIOConfig *superio_conf = opaque;
 102
 103     DPRINTF("superio_ioport_readb  address 0x%x\n", addr);
 104     return (superio_conf->config[superio_conf->index]);
 105 }
 106
 107 static const MemoryRegionOps superio_ops = {
 108     .read = superio_ioport_readb,
 109     .write = superio_ioport_writeb,
 110     .endianness = DEVICE_NATIVE_ENDIAN,
 111     .impl = {
 112         .min_access_size = 1,
 113         .max_access_size = 1,
 114     },
 115 };
 116
 117 static void vt82c686b_reset(void * opaque)
 118 {
 119     PCIDevice *d = opaque;
 120     uint8_t *pci_conf = d->config;
 121     VT82C686BState *vt82c = VT82C686B_DEVICE(d);
 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_create(bus, devfn, TYPE_VT82C686B_AC97_DEVICE);
 281     qdev_init_nofail(&dev->qdev);
 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 };
 304
 305 static void vt82c686b_mc97_realize(PCIDevice *dev, Error **errp)
 306 {
 307     VT686MC97State *s = VT82C686B_MC97_DEVICE(dev);
 308     uint8_t *pci_conf = s->dev.config;
 309
 310     pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_INVALIDATE |
 311                  PCI_COMMAND_VGA_PALETTE);
 312     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM);
 313     pci_set_long(pci_conf + PCI_INTERRUPT_PIN, 0x03);
 314 }
 315
 316 void vt82c686b_mc97_init(PCIBus *bus, int devfn)
 317 {
 318     PCIDevice *dev;
 319
 320     dev = pci_create(bus, devfn, TYPE_VT82C686B_MC97_DEVICE);
 321     qdev_init_nofail(&dev->qdev);
 322 }
 323
 324 static void via_mc97_class_init(ObjectClass *klass, void *data)
 325 {
 326     DeviceClass *dc = DEVICE_CLASS(klass);
 327     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 328
 329     k->realize = vt82c686b_mc97_realize;
 330     k->vendor_id = PCI_VENDOR_ID_VIA;
 331     k->device_id = PCI_DEVICE_ID_VIA_MC97;
 332     k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
 333     k->revision = 0x30;
 334     set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
 335     dc->desc = "MC97";
 336 }
 337
 338 static const TypeInfo via_mc97_info = {
 339     .name          = TYPE_VT82C686B_MC97_DEVICE,
 340     .parent        = TYPE_PCI_DEVICE,
 341     .instance_size = sizeof(VT686MC97State),
 342     .class_init    = via_mc97_class_init,
 343 };
 344
 345 /* vt82c686 pm init */
 346 static void vt82c686b_pm_realize(PCIDevice *dev, Error **errp)
 347 {
 348     VT686PMState *s = VT82C686B_PM_DEVICE(dev);
 349     uint8_t *pci_conf;
 350
 351     pci_conf = s->dev.config;
 352     pci_set_word(pci_conf + PCI_COMMAND, 0);
 353     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK |
 354                  PCI_STATUS_DEVSEL_MEDIUM);
 355
 356     /* 0x48-0x4B is Power Management I/O Base */
 357     pci_set_long(pci_conf + 0x48, 0x00000001);
 358
 359     /* SMB ports:0xeee0~0xeeef */
 360     s->smb_io_base =((s->smb_io_base & 0xfff0) + 0x0);
 361     pci_conf[0x90] = s->smb_io_base | 1;
 362     pci_conf[0x91] = s->smb_io_base >> 8;
 363     pci_conf[0xd2] = 0x90;
 364     pm_smbus_init(&s->dev.qdev, &s->smb);
 365     memory_region_add_subregion(get_system_io(), s->smb_io_base, &s->smb.io);
 366
 367     apm_init(dev, &s->apm, NULL, s);
 368
 369     memory_region_init(&s->io, OBJECT(dev), "vt82c686-pm", 64);
 370     memory_region_set_enabled(&s->io, false);
 371     memory_region_add_subregion(get_system_io(), 0, &s->io);
 372
 373     acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io);
 374     acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io);
 375     acpi_pm1_cnt_init(&s->ar, &s->io, false, false, 2);
 376 }
 377
 378 I2CBus *vt82c686b_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
 379                           qemu_irq sci_irq)
 380 {
 381     PCIDevice *dev;
 382     VT686PMState *s;
 383
 384     dev = pci_create(bus, devfn, TYPE_VT82C686B_PM_DEVICE);
 385     qdev_prop_set_uint32(&dev->qdev, "smb_io_base", smb_io_base);
 386
 387     s = VT82C686B_PM_DEVICE(dev);
 388
 389     qdev_init_nofail(&dev->qdev);
 390
 391     return s->smb.smbus;
 392 }
 393
 394 static Property via_pm_properties[] = {
 395     DEFINE_PROP_UINT32("smb_io_base", VT686PMState, smb_io_base, 0),
 396     DEFINE_PROP_END_OF_LIST(),
 397 };
 398
 399 static void via_pm_class_init(ObjectClass *klass, void *data)
 400 {
 401     DeviceClass *dc = DEVICE_CLASS(klass);
 402     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 403
 404     k->realize = vt82c686b_pm_realize;
 405     k->config_write = pm_write_config;
 406     k->vendor_id = PCI_VENDOR_ID_VIA;
 407     k->device_id = PCI_DEVICE_ID_VIA_ACPI;
 408     k->class_id = PCI_CLASS_BRIDGE_OTHER;
 409     k->revision = 0x40;
 410     dc->desc = "PM";
 411     dc->vmsd = &vmstate_acpi;
 412     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 413     dc->props = via_pm_properties;
 414 }
 415
 416 static const TypeInfo via_pm_info = {
 417     .name          = TYPE_VT82C686B_PM_DEVICE,
 418     .parent        = TYPE_PCI_DEVICE,
 419     .instance_size = sizeof(VT686PMState),
 420     .class_init    = via_pm_class_init,
 421 };
 422
 423 static const VMStateDescription vmstate_via = {
 424     .name = "vt82c686b",
 425     .version_id = 1,
 426     .minimum_version_id = 1,
 427     .fields = (VMStateField[]) {
 428         VMSTATE_PCI_DEVICE(dev, VT82C686BState),
 429         VMSTATE_END_OF_LIST()
 430     }
 431 };
 432
 433 /* init the PCI-to-ISA bridge */
 434 static void vt82c686b_realize(PCIDevice *d, Error **errp)
 435 {
 436     VT82C686BState *vt82c = VT82C686B_DEVICE(d);
 437     uint8_t *pci_conf;
 438     ISABus *isa_bus;
 439     uint8_t *wmask;
 440     int i;
 441
 442     isa_bus = isa_bus_new(DEVICE(d), get_system_memory(),
 443                           pci_address_space_io(d));
 444
 445     pci_conf = d->config;
 446     pci_config_set_prog_interface(pci_conf, 0x0);
 447
 448     wmask = d->wmask;
 449     for (i = 0x00; i < 0xff; i++) {
 450        if (i<=0x03 || (i>=0x08 && i<=0x3f)) {
 451            wmask[i] = 0x00;
 452        }
 453     }
 454
 455     memory_region_init_io(&vt82c->superio, OBJECT(d), &superio_ops,
 456                           &vt82c->superio_conf, "superio", 2);
 457     memory_region_set_enabled(&vt82c->superio, false);
 458     /* The floppy also uses 0x3f0 and 0x3f1.
 459      * But we do not emulate a floppy, so just set it here. */
 460     memory_region_add_subregion(isa_bus->address_space_io, 0x3f0,
 461                                 &vt82c->superio);
 462
 463     qemu_register_reset(vt82c686b_reset, d);
 464 }
 465
 466 ISABus *vt82c686b_init(PCIBus *bus, int devfn)
 467 {
 468     PCIDevice *d;
 469
 470     d = pci_create_simple_multifunction(bus, devfn, true,
 471                                         TYPE_VT82C686B_DEVICE);
 472
 473     return ISA_BUS(qdev_get_child_bus(DEVICE(d), "isa.0"));
 474 }
 475
 476 static void via_class_init(ObjectClass *klass, void *data)
 477 {
 478     DeviceClass *dc = DEVICE_CLASS(klass);
 479     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 480
 481     k->realize = vt82c686b_realize;
 482     k->config_write = vt82c686b_write_config;
 483     k->vendor_id = PCI_VENDOR_ID_VIA;
 484     k->device_id = PCI_DEVICE_ID_VIA_ISA_BRIDGE;
 485     k->class_id = PCI_CLASS_BRIDGE_ISA;
 486     k->revision = 0x40;
 487     dc->desc = "ISA bridge";
 488     dc->vmsd = &vmstate_via;
 489     /*
 490      * Reason: part of VIA VT82C686 southbridge, needs to be wired up,
 491      * e.g. by mips_fulong2e_init()
 492      */
 493     dc->cannot_instantiate_with_device_add_yet = true;
 494 }
 495
 496 static const TypeInfo via_info = {
 497     .name          = TYPE_VT82C686B_DEVICE,
 498     .parent        = TYPE_PCI_DEVICE,
 499     .instance_size = sizeof(VT82C686BState),
 500     .class_init    = via_class_init,
 501 };
 502
 503 static void vt82c686b_register_types(void)
 504 {
 505     type_register_static(&via_ac97_info);
 506     type_register_static(&via_mc97_info);
 507     type_register_static(&via_pm_info);
 508     type_register_static(&via_info);
 509 }
 510
 511 type_init(vt82c686b_register_types)