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