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 static void superio_ioport_writeb(void *opaque, hwaddr addr, uint64_t data,
  51                                   unsigned size)
  52 {
  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         bool can_write = true;
  60         /* 0x3f1 */
  61         switch (superio_conf->index) {
  62         case 0x00 ... 0xdf:
  63         case 0xe4:
  64         case 0xe5:
  65         case 0xe9 ... 0xed:
  66         case 0xf3:
  67         case 0xf5:
  68         case 0xf7:
  69         case 0xf9 ... 0xfb:
  70         case 0xfd ... 0xff:
  71             can_write = false;
  72             break;
  73         case 0xe7:
  74             if ((data & 0xff) != 0xfe) {
  75                 DPRINTF("change uart 1 base. unsupported yet\n");
  76                 can_write = false;
  77             }
  78             break;
  79         case 0xe8:
  80             if ((data & 0xff) != 0xbe) {
  81                 DPRINTF("change uart 2 base. unsupported yet\n");
  82                 can_write = false;
  83             }
  84             break;
  85         default:
  86             break;
  87
  88         }
  89         if (can_write) {
  90             superio_conf->config[superio_conf->index] = data & 0xff;
  91         }
  92     }
  93 }
  94
  95 static uint64_t superio_ioport_readb(void *opaque, hwaddr addr, unsigned size)
  96 {
  97     SuperIOConfig *superio_conf = opaque;
  98
  99     DPRINTF("superio_ioport_readb  address 0x%x\n", addr);
 100     return (superio_conf->config[superio_conf->index]);
 101 }
 102
 103 static const MemoryRegionOps superio_ops = {
 104     .read = superio_ioport_readb,
 105     .write = superio_ioport_writeb,
 106     .endianness = DEVICE_NATIVE_ENDIAN,
 107     .impl = {
 108         .min_access_size = 1,
 109         .max_access_size = 1,
 110     },
 111 };
 112
 113 static void vt82c686b_reset(void * opaque)
 114 {
 115     PCIDevice *d = opaque;
 116     uint8_t *pci_conf = d->config;
 117     VT82C686BState *vt82c = DO_UPCAST(VT82C686BState, dev, d);
 118
 119     pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0);
 120     pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
 121                  PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL);
 122     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM);
 123
 124     pci_conf[0x48] = 0x01; /* Miscellaneous Control 3 */
 125     pci_conf[0x4a] = 0x04; /* IDE interrupt Routing */
 126     pci_conf[0x4f] = 0x03; /* DMA/Master Mem Access Control 3 */
 127     pci_conf[0x50] = 0x2d; /* PnP DMA Request Control */
 128     pci_conf[0x59] = 0x04;
 129     pci_conf[0x5a] = 0x04; /* KBC/RTC Control*/
 130     pci_conf[0x5f] = 0x04;
 131     pci_conf[0x77] = 0x10; /* GPIO Control 1/2/3/4 */
 132
 133     vt82c->superio_conf.config[0xe0] = 0x3c;
 134     vt82c->superio_conf.config[0xe2] = 0x03;
 135     vt82c->superio_conf.config[0xe3] = 0xfc;
 136     vt82c->superio_conf.config[0xe6] = 0xde;
 137     vt82c->superio_conf.config[0xe7] = 0xfe;
 138     vt82c->superio_conf.config[0xe8] = 0xbe;
 139 }
 140
 141 /* write config pci function0 registers. PCI-ISA bridge */
 142 static void vt82c686b_write_config(PCIDevice * d, uint32_t address,
 143                                    uint32_t val, int len)
 144 {
 145     VT82C686BState *vt686 = DO_UPCAST(VT82C686BState, dev, d);
 146
 147     DPRINTF("vt82c686b_write_config  address 0x%x  val 0x%x len 0x%x\n",
 148            address, val, len);
 149
 150     pci_default_write_config(d, address, val, len);
 151     if (address == 0x85) {  /* enable or disable super IO configure */
 152         memory_region_set_enabled(&vt686->superio, val & 0x2);
 153     }
 154 }
 155
 156 #define ACPI_DBG_IO_ADDR  0xb044
 157
 158 typedef struct VT686PMState {
 159     PCIDevice dev;
 160     MemoryRegion io;
 161     ACPIREGS ar;
 162     APMState apm;
 163     PMSMBus smb;
 164     uint32_t smb_io_base;
 165 } VT686PMState;
 166
 167 typedef struct VT686AC97State {
 168     PCIDevice dev;
 169 } VT686AC97State;
 170
 171 typedef struct VT686MC97State {
 172     PCIDevice dev;
 173 } VT686MC97State;
 174
 175 static void pm_update_sci(VT686PMState *s)
 176 {
 177     int sci_level, pmsts;
 178
 179     pmsts = acpi_pm1_evt_get_sts(&s->ar);
 180     sci_level = (((pmsts & s->ar.pm1.evt.en) &
 181                   (ACPI_BITMASK_RT_CLOCK_ENABLE |
 182                    ACPI_BITMASK_POWER_BUTTON_ENABLE |
 183                    ACPI_BITMASK_GLOBAL_LOCK_ENABLE |
 184                    ACPI_BITMASK_TIMER_ENABLE)) != 0);
 185     pci_set_irq(&s->dev, sci_level);
 186     /* schedule a timer interruption if needed */
 187     acpi_pm_tmr_update(&s->ar, (s->ar.pm1.evt.en & ACPI_BITMASK_TIMER_ENABLE) &&
 188                        !(pmsts & ACPI_BITMASK_TIMER_STATUS));
 189 }
 190
 191 static void pm_tmr_timer(ACPIREGS *ar)
 192 {
 193     VT686PMState *s = container_of(ar, VT686PMState, ar);
 194     pm_update_sci(s);
 195 }
 196
 197 static void pm_io_space_update(VT686PMState *s)
 198 {
 199     uint32_t pm_io_base;
 200
 201     pm_io_base = pci_get_long(s->dev.config + 0x40);
 202     pm_io_base &= 0xffc0;
 203
 204     memory_region_transaction_begin();
 205     memory_region_set_enabled(&s->io, s->dev.config[0x80] & 1);
 206     memory_region_set_address(&s->io, pm_io_base);
 207     memory_region_transaction_commit();
 208 }
 209
 210 static void pm_write_config(PCIDevice *d,
 211                             uint32_t address, uint32_t val, int len)
 212 {
 213     DPRINTF("pm_write_config  address 0x%x  val 0x%x len 0x%x\n",
 214            address, val, len);
 215     pci_default_write_config(d, address, val, len);
 216 }
 217
 218 static int vmstate_acpi_post_load(void *opaque, int version_id)
 219 {
 220     VT686PMState *s = opaque;
 221
 222     pm_io_space_update(s);
 223     return 0;
 224 }
 225
 226 static const VMStateDescription vmstate_acpi = {
 227     .name = "vt82c686b_pm",
 228     .version_id = 1,
 229     .minimum_version_id = 1,
 230     .post_load = vmstate_acpi_post_load,
 231     .fields = (VMStateField[]) {
 232         VMSTATE_PCI_DEVICE(dev, VT686PMState),
 233         VMSTATE_UINT16(ar.pm1.evt.sts, VT686PMState),
 234         VMSTATE_UINT16(ar.pm1.evt.en, VT686PMState),
 235         VMSTATE_UINT16(ar.pm1.cnt.cnt, VT686PMState),
 236         VMSTATE_STRUCT(apm, VT686PMState, 0, vmstate_apm, APMState),
 237         VMSTATE_TIMER_PTR(ar.tmr.timer, VT686PMState),
 238         VMSTATE_INT64(ar.tmr.overflow_time, VT686PMState),
 239         VMSTATE_END_OF_LIST()
 240     }
 241 };
 242
 243 /*
 244  * TODO: vt82c686b_ac97_init() and vt82c686b_mc97_init()
 245  * just register a PCI device now, functionalities will be implemented later.
 246  */
 247
 248 static void vt82c686b_ac97_realize(PCIDevice *dev, Error **errp)
 249 {
 250     VT686AC97State *s = DO_UPCAST(VT686AC97State, dev, dev);
 251     uint8_t *pci_conf = s->dev.config;
 252
 253     pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_INVALIDATE |
 254                  PCI_COMMAND_PARITY);
 255     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_CAP_LIST |
 256                  PCI_STATUS_DEVSEL_MEDIUM);
 257     pci_set_long(pci_conf + PCI_INTERRUPT_PIN, 0x03);
 258 }
 259
 260 void vt82c686b_ac97_init(PCIBus *bus, int devfn)
 261 {
 262     PCIDevice *dev;
 263
 264     dev = pci_create(bus, devfn, "VT82C686B_AC97");
 265     qdev_init_nofail(&dev->qdev);
 266 }
 267
 268 static void via_ac97_class_init(ObjectClass *klass, void *data)
 269 {
 270     DeviceClass *dc = DEVICE_CLASS(klass);
 271     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 272
 273     k->realize = vt82c686b_ac97_realize;
 274     k->vendor_id = PCI_VENDOR_ID_VIA;
 275     k->device_id = PCI_DEVICE_ID_VIA_AC97;
 276     k->revision = 0x50;
 277     k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
 278     set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
 279     dc->desc = "AC97";
 280 }
 281
 282 static const TypeInfo via_ac97_info = {
 283     .name          = "VT82C686B_AC97",
 284     .parent        = TYPE_PCI_DEVICE,
 285     .instance_size = sizeof(VT686AC97State),
 286     .class_init    = via_ac97_class_init,
 287 };
 288
 289 static void vt82c686b_mc97_realize(PCIDevice *dev, Error **errp)
 290 {
 291     VT686MC97State *s = DO_UPCAST(VT686MC97State, dev, dev);
 292     uint8_t *pci_conf = s->dev.config;
 293
 294     pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_INVALIDATE |
 295                  PCI_COMMAND_VGA_PALETTE);
 296     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM);
 297     pci_set_long(pci_conf + PCI_INTERRUPT_PIN, 0x03);
 298 }
 299
 300 void vt82c686b_mc97_init(PCIBus *bus, int devfn)
 301 {
 302     PCIDevice *dev;
 303
 304     dev = pci_create(bus, devfn, "VT82C686B_MC97");
 305     qdev_init_nofail(&dev->qdev);
 306 }
 307
 308 static void via_mc97_class_init(ObjectClass *klass, void *data)
 309 {
 310     DeviceClass *dc = DEVICE_CLASS(klass);
 311     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 312
 313     k->realize = vt82c686b_mc97_realize;
 314     k->vendor_id = PCI_VENDOR_ID_VIA;
 315     k->device_id = PCI_DEVICE_ID_VIA_MC97;
 316     k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
 317     k->revision = 0x30;
 318     set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
 319     dc->desc = "MC97";
 320 }
 321
 322 static const TypeInfo via_mc97_info = {
 323     .name          = "VT82C686B_MC97",
 324     .parent        = TYPE_PCI_DEVICE,
 325     .instance_size = sizeof(VT686MC97State),
 326     .class_init    = via_mc97_class_init,
 327 };
 328
 329 /* vt82c686 pm init */
 330 static void vt82c686b_pm_realize(PCIDevice *dev, Error **errp)
 331 {
 332     VT686PMState *s = DO_UPCAST(VT686PMState, dev, dev);
 333     uint8_t *pci_conf;
 334
 335     pci_conf = s->dev.config;
 336     pci_set_word(pci_conf + PCI_COMMAND, 0);
 337     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK |
 338                  PCI_STATUS_DEVSEL_MEDIUM);
 339
 340     /* 0x48-0x4B is Power Management I/O Base */
 341     pci_set_long(pci_conf + 0x48, 0x00000001);
 342
 343     /* SMB ports:0xeee0~0xeeef */
 344     s->smb_io_base =((s->smb_io_base & 0xfff0) + 0x0);
 345     pci_conf[0x90] = s->smb_io_base | 1;
 346     pci_conf[0x91] = s->smb_io_base >> 8;
 347     pci_conf[0xd2] = 0x90;
 348     pm_smbus_init(&s->dev.qdev, &s->smb);
 349     memory_region_add_subregion(get_system_io(), s->smb_io_base, &s->smb.io);
 350
 351     apm_init(dev, &s->apm, NULL, s);
 352
 353     memory_region_init(&s->io, OBJECT(dev), "vt82c686-pm", 64);
 354     memory_region_set_enabled(&s->io, false);
 355     memory_region_add_subregion(get_system_io(), 0, &s->io);
 356
 357     acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io);
 358     acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io);
 359     acpi_pm1_cnt_init(&s->ar, &s->io, 2);
 360 }
 361
 362 I2CBus *vt82c686b_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
 363                           qemu_irq sci_irq)
 364 {
 365     PCIDevice *dev;
 366     VT686PMState *s;
 367
 368     dev = pci_create(bus, devfn, "VT82C686B_PM");
 369     qdev_prop_set_uint32(&dev->qdev, "smb_io_base", smb_io_base);
 370
 371     s = DO_UPCAST(VT686PMState, dev, dev);
 372
 373     qdev_init_nofail(&dev->qdev);
 374
 375     return s->smb.smbus;
 376 }
 377
 378 static Property via_pm_properties[] = {
 379     DEFINE_PROP_UINT32("smb_io_base", VT686PMState, smb_io_base, 0),
 380     DEFINE_PROP_END_OF_LIST(),
 381 };
 382
 383 static void via_pm_class_init(ObjectClass *klass, void *data)
 384 {
 385     DeviceClass *dc = DEVICE_CLASS(klass);
 386     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 387
 388     k->realize = vt82c686b_pm_realize;
 389     k->config_write = pm_write_config;
 390     k->vendor_id = PCI_VENDOR_ID_VIA;
 391     k->device_id = PCI_DEVICE_ID_VIA_ACPI;
 392     k->class_id = PCI_CLASS_BRIDGE_OTHER;
 393     k->revision = 0x40;
 394     dc->desc = "PM";
 395     dc->vmsd = &vmstate_acpi;
 396     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 397     dc->props = via_pm_properties;
 398 }
 399
 400 static const TypeInfo via_pm_info = {
 401     .name          = "VT82C686B_PM",
 402     .parent        = TYPE_PCI_DEVICE,
 403     .instance_size = sizeof(VT686PMState),
 404     .class_init    = via_pm_class_init,
 405 };
 406
 407 static const VMStateDescription vmstate_via = {
 408     .name = "vt82c686b",
 409     .version_id = 1,
 410     .minimum_version_id = 1,
 411     .fields = (VMStateField[]) {
 412         VMSTATE_PCI_DEVICE(dev, VT82C686BState),
 413         VMSTATE_END_OF_LIST()
 414     }
 415 };
 416
 417 /* init the PCI-to-ISA bridge */
 418 static void vt82c686b_realize(PCIDevice *d, Error **errp)
 419 {
 420     VT82C686BState *vt82c = DO_UPCAST(VT82C686BState, dev, d);
 421     uint8_t *pci_conf;
 422     ISABus *isa_bus;
 423     uint8_t *wmask;
 424     int i;
 425
 426     isa_bus = isa_bus_new(DEVICE(d), get_system_memory(),
 427                           pci_address_space_io(d));
 428
 429     pci_conf = d->config;
 430     pci_config_set_prog_interface(pci_conf, 0x0);
 431
 432     wmask = d->wmask;
 433     for (i = 0x00; i < 0xff; i++) {
 434        if (i<=0x03 || (i>=0x08 && i<=0x3f)) {
 435            wmask[i] = 0x00;
 436        }
 437     }
 438
 439     memory_region_init_io(&vt82c->superio, OBJECT(d), &superio_ops,
 440                           &vt82c->superio_conf, "superio", 2);
 441     memory_region_set_enabled(&vt82c->superio, false);
 442     /* The floppy also uses 0x3f0 and 0x3f1.
 443      * But we do not emulate a floppy, so just set it here. */
 444     memory_region_add_subregion(isa_bus->address_space_io, 0x3f0,
 445                                 &vt82c->superio);
 446
 447     qemu_register_reset(vt82c686b_reset, d);
 448 }
 449
 450 ISABus *vt82c686b_init(PCIBus *bus, int devfn)
 451 {
 452     PCIDevice *d;
 453
 454     d = pci_create_simple_multifunction(bus, devfn, true, "VT82C686B");
 455
 456     return ISA_BUS(qdev_get_child_bus(DEVICE(d), "isa.0"));
 457 }
 458
 459 static void via_class_init(ObjectClass *klass, void *data)
 460 {
 461     DeviceClass *dc = DEVICE_CLASS(klass);
 462     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 463
 464     k->realize = vt82c686b_realize;
 465     k->config_write = vt82c686b_write_config;
 466     k->vendor_id = PCI_VENDOR_ID_VIA;
 467     k->device_id = PCI_DEVICE_ID_VIA_ISA_BRIDGE;
 468     k->class_id = PCI_CLASS_BRIDGE_ISA;
 469     k->revision = 0x40;
 470     dc->desc = "ISA bridge";
 471     dc->vmsd = &vmstate_via;
 472     /*
 473      * Reason: part of VIA VT82C686 southbridge, needs to be wired up,
 474      * e.g. by mips_fulong2e_init()
 475      */
 476     dc->cannot_instantiate_with_device_add_yet = true;
 477 }
 478
 479 static const TypeInfo via_info = {
 480     .name          = "VT82C686B",
 481     .parent        = TYPE_PCI_DEVICE,
 482     .instance_size = sizeof(VT82C686BState),
 483     .class_init    = via_class_init,
 484 };
 485
 486 static void vt82c686b_register_types(void)
 487 {
 488     type_register_static(&via_ac97_info);
 489     type_register_static(&via_mc97_info);
 490     type_register_static(&via_pm_info);
 491     type_register_static(&via_info);
 492 }
 493
 494 type_init(vt82c686b_register_types)