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/block/fdc.h" 19 #include "hw/char/parallel-isa.h" 20 #include "hw/char/serial-isa.h" 21 #include "hw/pci/pci.h" 22 #include "hw/qdev-properties.h" 23 #include "hw/ide/pci.h" 24 #include "hw/isa/isa.h" 25 #include "hw/isa/superio.h" 26 #include "hw/intc/i8259.h" 27 #include "hw/irq.h" 28 #include "hw/dma/i8257.h" 29 #include "hw/usb/hcd-uhci-pci.h" 30 #include "hw/timer/i8254.h" 31 #include "hw/rtc/mc146818rtc.h" 32 #include "migration/vmstate.h" 33 #include "hw/isa/apm.h" 34 #include "hw/acpi/acpi.h" 35 #include "hw/i2c/pm_smbus.h" 36 #include "qapi/error.h" 37 #include "qemu/log.h" 38 #include "qemu/module.h" 39 #include "qemu/range.h" 40 #include "qemu/timer.h" 41 #include "trace.h" 42 43 #define TYPE_VIA_PM "via-pm" 44 OBJECT_DECLARE_SIMPLE_TYPE(ViaPMState, VIA_PM) 45 46 struct ViaPMState { 47 PCIDevice dev; 48 MemoryRegion io; 49 ACPIREGS ar; 50 APMState apm; 51 PMSMBus smb; 52 }; 53 pm_io_space_update(ViaPMState * s)54 static void pm_io_space_update(ViaPMState *s) 55 { 56 uint32_t pmbase = pci_get_long(s->dev.config + 0x48) & 0xff80UL; 57 58 memory_region_transaction_begin(); 59 memory_region_set_address(&s->io, pmbase); 60 memory_region_set_enabled(&s->io, s->dev.config[0x41] & BIT(7)); 61 memory_region_transaction_commit(); 62 } 63 smb_io_space_update(ViaPMState * s)64 static void smb_io_space_update(ViaPMState *s) 65 { 66 uint32_t smbase = pci_get_long(s->dev.config + 0x90) & 0xfff0UL; 67 68 memory_region_transaction_begin(); 69 memory_region_set_address(&s->smb.io, smbase); 70 memory_region_set_enabled(&s->smb.io, s->dev.config[0xd2] & BIT(0)); 71 memory_region_transaction_commit(); 72 } 73 vmstate_acpi_post_load(void * opaque,int version_id)74 static int vmstate_acpi_post_load(void *opaque, int version_id) 75 { 76 ViaPMState *s = opaque; 77 78 pm_io_space_update(s); 79 smb_io_space_update(s); 80 return 0; 81 } 82 83 static const VMStateDescription vmstate_acpi = { 84 .name = "vt82c686b_pm", 85 .version_id = 1, 86 .minimum_version_id = 1, 87 .post_load = vmstate_acpi_post_load, 88 .fields = (const VMStateField[]) { 89 VMSTATE_PCI_DEVICE(dev, ViaPMState), 90 VMSTATE_UINT16(ar.pm1.evt.sts, ViaPMState), 91 VMSTATE_UINT16(ar.pm1.evt.en, ViaPMState), 92 VMSTATE_UINT16(ar.pm1.cnt.cnt, ViaPMState), 93 VMSTATE_STRUCT(apm, ViaPMState, 0, vmstate_apm, APMState), 94 VMSTATE_TIMER_PTR(ar.tmr.timer, ViaPMState), 95 VMSTATE_INT64(ar.tmr.overflow_time, ViaPMState), 96 VMSTATE_END_OF_LIST() 97 } 98 }; 99 pm_write_config(PCIDevice * d,uint32_t addr,uint32_t val,int len)100 static void pm_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int len) 101 { 102 ViaPMState *s = VIA_PM(d); 103 104 trace_via_pm_write(addr, val, len); 105 pci_default_write_config(d, addr, val, len); 106 if (ranges_overlap(addr, len, 0x48, 4)) { 107 uint32_t v = pci_get_long(s->dev.config + 0x48); 108 pci_set_long(s->dev.config + 0x48, (v & 0xff80UL) | 1); 109 } 110 if (range_covers_byte(addr, len, 0x41)) { 111 pm_io_space_update(s); 112 } 113 if (ranges_overlap(addr, len, 0x90, 4)) { 114 uint32_t v = pci_get_long(s->dev.config + 0x90); 115 pci_set_long(s->dev.config + 0x90, (v & 0xfff0UL) | 1); 116 } 117 if (range_covers_byte(addr, len, 0xd2)) { 118 s->dev.config[0xd2] &= 0xf; 119 smb_io_space_update(s); 120 } 121 } 122 pm_io_write(void * op,hwaddr addr,uint64_t data,unsigned size)123 static void pm_io_write(void *op, hwaddr addr, uint64_t data, unsigned size) 124 { 125 trace_via_pm_io_write(addr, data, size); 126 } 127 pm_io_read(void * op,hwaddr addr,unsigned size)128 static uint64_t pm_io_read(void *op, hwaddr addr, unsigned size) 129 { 130 trace_via_pm_io_read(addr, 0, size); 131 return 0; 132 } 133 134 static const MemoryRegionOps pm_io_ops = { 135 .read = pm_io_read, 136 .write = pm_io_write, 137 .endianness = DEVICE_NATIVE_ENDIAN, 138 .impl = { 139 .min_access_size = 1, 140 .max_access_size = 1, 141 }, 142 }; 143 pm_update_sci(ViaPMState * s)144 static void pm_update_sci(ViaPMState *s) 145 { 146 int sci_level, pmsts; 147 148 pmsts = acpi_pm1_evt_get_sts(&s->ar); 149 sci_level = (((pmsts & s->ar.pm1.evt.en) & 150 (ACPI_BITMASK_RT_CLOCK_ENABLE | 151 ACPI_BITMASK_POWER_BUTTON_ENABLE | 152 ACPI_BITMASK_GLOBAL_LOCK_ENABLE | 153 ACPI_BITMASK_TIMER_ENABLE)) != 0); 154 if (pci_get_byte(s->dev.config + PCI_INTERRUPT_PIN)) { 155 /* 156 * FIXME: 157 * Fix device model that realizes this PM device and remove 158 * this work around. 159 * The device model should wire SCI and setup 160 * PCI_INTERRUPT_PIN properly. 161 * If PIN# = 0(interrupt pin isn't used), don't raise SCI as 162 * work around. 163 */ 164 pci_set_irq(&s->dev, sci_level); 165 } 166 /* schedule a timer interruption if needed */ 167 acpi_pm_tmr_update(&s->ar, (s->ar.pm1.evt.en & ACPI_BITMASK_TIMER_ENABLE) && 168 !(pmsts & ACPI_BITMASK_TIMER_STATUS)); 169 } 170 pm_tmr_timer(ACPIREGS * ar)171 static void pm_tmr_timer(ACPIREGS *ar) 172 { 173 ViaPMState *s = container_of(ar, ViaPMState, ar); 174 pm_update_sci(s); 175 } 176 via_pm_reset(DeviceState * d)177 static void via_pm_reset(DeviceState *d) 178 { 179 ViaPMState *s = VIA_PM(d); 180 181 memset(s->dev.config + PCI_CONFIG_HEADER_SIZE, 0, 182 PCI_CONFIG_SPACE_SIZE - PCI_CONFIG_HEADER_SIZE); 183 /* Power Management IO base */ 184 pci_set_long(s->dev.config + 0x48, 1); 185 /* SMBus IO base */ 186 pci_set_long(s->dev.config + 0x90, 1); 187 188 acpi_pm1_evt_reset(&s->ar); 189 acpi_pm1_cnt_reset(&s->ar); 190 acpi_pm_tmr_reset(&s->ar); 191 pm_update_sci(s); 192 193 pm_io_space_update(s); 194 smb_io_space_update(s); 195 } 196 via_pm_realize(PCIDevice * dev,Error ** errp)197 static void via_pm_realize(PCIDevice *dev, Error **errp) 198 { 199 ViaPMState *s = VIA_PM(dev); 200 201 pci_set_word(dev->config + PCI_STATUS, PCI_STATUS_FAST_BACK | 202 PCI_STATUS_DEVSEL_MEDIUM); 203 204 pm_smbus_init(DEVICE(s), &s->smb, false); 205 memory_region_add_subregion(pci_address_space_io(dev), 0, &s->smb.io); 206 memory_region_set_enabled(&s->smb.io, false); 207 208 apm_init(dev, &s->apm, NULL, s); 209 210 memory_region_init_io(&s->io, OBJECT(dev), &pm_io_ops, s, "via-pm", 128); 211 memory_region_add_subregion(pci_address_space_io(dev), 0, &s->io); 212 memory_region_set_enabled(&s->io, false); 213 214 acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io); 215 acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io); 216 acpi_pm1_cnt_init(&s->ar, &s->io, false, false, 2, false); 217 } 218 219 typedef struct via_pm_init_info { 220 uint16_t device_id; 221 } ViaPMInitInfo; 222 via_pm_class_init(ObjectClass * klass,void * data)223 static void via_pm_class_init(ObjectClass *klass, void *data) 224 { 225 DeviceClass *dc = DEVICE_CLASS(klass); 226 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 227 ViaPMInitInfo *info = data; 228 229 k->realize = via_pm_realize; 230 k->config_write = pm_write_config; 231 k->vendor_id = PCI_VENDOR_ID_VIA; 232 k->device_id = info->device_id; 233 k->class_id = PCI_CLASS_BRIDGE_OTHER; 234 k->revision = 0x40; 235 device_class_set_legacy_reset(dc, via_pm_reset); 236 /* Reason: part of VIA south bridge, does not exist stand alone */ 237 dc->user_creatable = false; 238 dc->vmsd = &vmstate_acpi; 239 } 240 241 static const TypeInfo via_pm_info = { 242 .name = TYPE_VIA_PM, 243 .parent = TYPE_PCI_DEVICE, 244 .instance_size = sizeof(ViaPMState), 245 .abstract = true, 246 .interfaces = (InterfaceInfo[]) { 247 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 248 { }, 249 }, 250 }; 251 252 static const ViaPMInitInfo vt82c686b_pm_init_info = { 253 .device_id = PCI_DEVICE_ID_VIA_82C686B_PM, 254 }; 255 256 #define TYPE_VT82C686B_PM "vt82c686b-pm" 257 258 static const TypeInfo vt82c686b_pm_info = { 259 .name = TYPE_VT82C686B_PM, 260 .parent = TYPE_VIA_PM, 261 .class_init = via_pm_class_init, 262 .class_data = (void *)&vt82c686b_pm_init_info, 263 }; 264 265 static const ViaPMInitInfo vt8231_pm_init_info = { 266 .device_id = PCI_DEVICE_ID_VIA_8231_PM, 267 }; 268 269 #define TYPE_VT8231_PM "vt8231-pm" 270 271 static const TypeInfo vt8231_pm_info = { 272 .name = TYPE_VT8231_PM, 273 .parent = TYPE_VIA_PM, 274 .class_init = via_pm_class_init, 275 .class_data = (void *)&vt8231_pm_init_info, 276 }; 277 278 279 #define TYPE_VIA_SUPERIO "via-superio" 280 OBJECT_DECLARE_SIMPLE_TYPE(ViaSuperIOState, VIA_SUPERIO) 281 282 struct ViaSuperIOState { 283 ISASuperIODevice superio; 284 uint8_t regs[0x100]; 285 const MemoryRegionOps *io_ops; 286 MemoryRegion io; 287 }; 288 via_superio_io_enable(ViaSuperIOState * s,bool enable)289 static inline void via_superio_io_enable(ViaSuperIOState *s, bool enable) 290 { 291 memory_region_set_enabled(&s->io, enable); 292 } 293 via_superio_realize(DeviceState * d,Error ** errp)294 static void via_superio_realize(DeviceState *d, Error **errp) 295 { 296 ViaSuperIOState *s = VIA_SUPERIO(d); 297 ISASuperIOClass *ic = ISA_SUPERIO_GET_CLASS(s); 298 Error *local_err = NULL; 299 300 assert(s->io_ops); 301 ic->parent_realize(d, &local_err); 302 if (local_err) { 303 error_propagate(errp, local_err); 304 return; 305 } 306 memory_region_init_io(&s->io, OBJECT(d), s->io_ops, s, "via-superio", 2); 307 memory_region_set_enabled(&s->io, false); 308 /* The floppy also uses 0x3f0 and 0x3f1 but this seems to work anyway */ 309 memory_region_add_subregion(isa_address_space_io(ISA_DEVICE(s)), 0x3f0, 310 &s->io); 311 } 312 via_superio_cfg_read(void * opaque,hwaddr addr,unsigned size)313 static uint64_t via_superio_cfg_read(void *opaque, hwaddr addr, unsigned size) 314 { 315 ViaSuperIOState *sc = opaque; 316 uint8_t idx = sc->regs[0]; 317 uint8_t val = sc->regs[idx]; 318 319 if (addr == 0) { 320 return idx; 321 } 322 if (addr == 1 && idx == 0) { 323 val = 0; /* reading reg 0 where we store index value */ 324 } 325 trace_via_superio_read(idx, val); 326 return val; 327 } 328 via_superio_devices_enable(ViaSuperIOState * s,uint8_t data)329 static void via_superio_devices_enable(ViaSuperIOState *s, uint8_t data) 330 { 331 ISASuperIOClass *ic = ISA_SUPERIO_GET_CLASS(s); 332 333 isa_parallel_set_enabled(s->superio.parallel[0], (data & 0x3) != 3); 334 for (int i = 0; i < ic->serial.count; i++) { 335 isa_serial_set_enabled(s->superio.serial[i], data & BIT(i + 2)); 336 } 337 isa_fdc_set_enabled(s->superio.floppy, data & BIT(4)); 338 } 339 via_superio_class_init(ObjectClass * klass,void * data)340 static void via_superio_class_init(ObjectClass *klass, void *data) 341 { 342 DeviceClass *dc = DEVICE_CLASS(klass); 343 ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass); 344 345 device_class_set_parent_realize(dc, via_superio_realize, 346 &sc->parent_realize); 347 } 348 349 static const TypeInfo via_superio_info = { 350 .name = TYPE_VIA_SUPERIO, 351 .parent = TYPE_ISA_SUPERIO, 352 .instance_size = sizeof(ViaSuperIOState), 353 .class_size = sizeof(ISASuperIOClass), 354 .class_init = via_superio_class_init, 355 .abstract = true, 356 }; 357 358 #define TYPE_VT82C686B_SUPERIO "vt82c686b-superio" 359 vt82c686b_superio_cfg_write(void * opaque,hwaddr addr,uint64_t data,unsigned size)360 static void vt82c686b_superio_cfg_write(void *opaque, hwaddr addr, 361 uint64_t data, unsigned size) 362 { 363 ViaSuperIOState *sc = opaque; 364 uint8_t idx = sc->regs[0]; 365 366 if (addr == 0) { /* config index register */ 367 sc->regs[0] = data; 368 return; 369 } 370 371 /* config data register */ 372 trace_via_superio_write(idx, data); 373 switch (idx) { 374 case 0x00 ... 0xdf: 375 case 0xe4: 376 case 0xe5: 377 case 0xe9 ... 0xed: 378 case 0xf3: 379 case 0xf5: 380 case 0xf7: 381 case 0xf9 ... 0xfb: 382 case 0xfd ... 0xff: 383 /* ignore write to read only registers */ 384 return; 385 case 0xe2: 386 data &= 0x1f; 387 via_superio_devices_enable(sc, data); 388 break; 389 case 0xe3: 390 data &= 0xfc; 391 isa_fdc_set_iobase(sc->superio.floppy, data << 2); 392 break; 393 case 0xe6: 394 isa_parallel_set_iobase(sc->superio.parallel[0], data << 2); 395 break; 396 case 0xe7: 397 data &= 0xfe; 398 isa_serial_set_iobase(sc->superio.serial[0], data << 2); 399 break; 400 case 0xe8: 401 data &= 0xfe; 402 isa_serial_set_iobase(sc->superio.serial[1], data << 2); 403 break; 404 default: 405 qemu_log_mask(LOG_UNIMP, 406 "via_superio_cfg: unimplemented register 0x%x\n", idx); 407 break; 408 } 409 sc->regs[idx] = data; 410 } 411 412 static const MemoryRegionOps vt82c686b_superio_cfg_ops = { 413 .read = via_superio_cfg_read, 414 .write = vt82c686b_superio_cfg_write, 415 .endianness = DEVICE_NATIVE_ENDIAN, 416 .impl = { 417 .min_access_size = 1, 418 .max_access_size = 1, 419 }, 420 }; 421 vt82c686b_superio_reset(DeviceState * dev)422 static void vt82c686b_superio_reset(DeviceState *dev) 423 { 424 ViaSuperIOState *s = VIA_SUPERIO(dev); 425 426 memset(s->regs, 0, sizeof(s->regs)); 427 /* Device ID */ 428 vt82c686b_superio_cfg_write(s, 0, 0xe0, 1); 429 vt82c686b_superio_cfg_write(s, 1, 0x3c, 1); 430 /* 431 * Function select - only serial enabled 432 * Fuloong 2e's rescue-yl prints to the serial console w/o enabling it. This 433 * suggests that the serial ports are enabled by default, so override the 434 * datasheet. 435 */ 436 vt82c686b_superio_cfg_write(s, 0, 0xe2, 1); 437 vt82c686b_superio_cfg_write(s, 1, 0x0f, 1); 438 /* Floppy ctrl base addr 0x3f0-7 */ 439 vt82c686b_superio_cfg_write(s, 0, 0xe3, 1); 440 vt82c686b_superio_cfg_write(s, 1, 0xfc, 1); 441 /* Parallel port base addr 0x378-f */ 442 vt82c686b_superio_cfg_write(s, 0, 0xe6, 1); 443 vt82c686b_superio_cfg_write(s, 1, 0xde, 1); 444 /* Serial port 1 base addr 0x3f8-f */ 445 vt82c686b_superio_cfg_write(s, 0, 0xe7, 1); 446 vt82c686b_superio_cfg_write(s, 1, 0xfe, 1); 447 /* Serial port 2 base addr 0x2f8-f */ 448 vt82c686b_superio_cfg_write(s, 0, 0xe8, 1); 449 vt82c686b_superio_cfg_write(s, 1, 0xbe, 1); 450 451 vt82c686b_superio_cfg_write(s, 0, 0, 1); 452 } 453 vt82c686b_superio_init(Object * obj)454 static void vt82c686b_superio_init(Object *obj) 455 { 456 VIA_SUPERIO(obj)->io_ops = &vt82c686b_superio_cfg_ops; 457 } 458 vt82c686b_superio_class_init(ObjectClass * klass,void * data)459 static void vt82c686b_superio_class_init(ObjectClass *klass, void *data) 460 { 461 DeviceClass *dc = DEVICE_CLASS(klass); 462 ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass); 463 464 device_class_set_legacy_reset(dc, vt82c686b_superio_reset); 465 sc->serial.count = 2; 466 sc->parallel.count = 1; 467 sc->ide.count = 0; /* emulated by via-ide */ 468 sc->floppy.count = 1; 469 } 470 471 static const TypeInfo vt82c686b_superio_info = { 472 .name = TYPE_VT82C686B_SUPERIO, 473 .parent = TYPE_VIA_SUPERIO, 474 .instance_size = sizeof(ViaSuperIOState), 475 .instance_init = vt82c686b_superio_init, 476 .class_size = sizeof(ISASuperIOClass), 477 .class_init = vt82c686b_superio_class_init, 478 }; 479 480 481 #define TYPE_VT8231_SUPERIO "vt8231-superio" 482 vt8231_superio_cfg_write(void * opaque,hwaddr addr,uint64_t data,unsigned size)483 static void vt8231_superio_cfg_write(void *opaque, hwaddr addr, 484 uint64_t data, unsigned size) 485 { 486 ViaSuperIOState *sc = opaque; 487 uint8_t idx = sc->regs[0]; 488 489 if (addr == 0) { /* config index register */ 490 sc->regs[0] = data; 491 return; 492 } 493 494 /* config data register */ 495 trace_via_superio_write(idx, data); 496 switch (idx) { 497 case 0x00 ... 0xdf: 498 case 0xe7 ... 0xef: 499 case 0xf0 ... 0xf1: 500 case 0xf5: 501 case 0xf8: 502 case 0xfd: 503 /* ignore write to read only registers */ 504 return; 505 case 0xf2: 506 data &= 0x17; 507 via_superio_devices_enable(sc, data); 508 break; 509 case 0xf4: 510 data &= 0xfe; 511 isa_serial_set_iobase(sc->superio.serial[0], data << 2); 512 break; 513 case 0xf6: 514 isa_parallel_set_iobase(sc->superio.parallel[0], data << 2); 515 break; 516 case 0xf7: 517 data &= 0xfc; 518 isa_fdc_set_iobase(sc->superio.floppy, data << 2); 519 break; 520 default: 521 qemu_log_mask(LOG_UNIMP, 522 "via_superio_cfg: unimplemented register 0x%x\n", idx); 523 break; 524 } 525 sc->regs[idx] = data; 526 } 527 528 static const MemoryRegionOps vt8231_superio_cfg_ops = { 529 .read = via_superio_cfg_read, 530 .write = vt8231_superio_cfg_write, 531 .endianness = DEVICE_NATIVE_ENDIAN, 532 .impl = { 533 .min_access_size = 1, 534 .max_access_size = 1, 535 }, 536 }; 537 vt8231_superio_reset(DeviceState * dev)538 static void vt8231_superio_reset(DeviceState *dev) 539 { 540 ViaSuperIOState *s = VIA_SUPERIO(dev); 541 542 memset(s->regs, 0, sizeof(s->regs)); 543 /* Device ID */ 544 s->regs[0xf0] = 0x3c; 545 /* Device revision */ 546 s->regs[0xf1] = 0x01; 547 /* Function select - all disabled */ 548 vt8231_superio_cfg_write(s, 0, 0xf2, 1); 549 vt8231_superio_cfg_write(s, 1, 0x03, 1); 550 /* Serial port base addr */ 551 vt8231_superio_cfg_write(s, 0, 0xf4, 1); 552 vt8231_superio_cfg_write(s, 1, 0xfe, 1); 553 /* Parallel port base addr */ 554 vt8231_superio_cfg_write(s, 0, 0xf6, 1); 555 vt8231_superio_cfg_write(s, 1, 0xde, 1); 556 /* Floppy ctrl base addr */ 557 vt8231_superio_cfg_write(s, 0, 0xf7, 1); 558 vt8231_superio_cfg_write(s, 1, 0xfc, 1); 559 560 vt8231_superio_cfg_write(s, 0, 0, 1); 561 } 562 vt8231_superio_init(Object * obj)563 static void vt8231_superio_init(Object *obj) 564 { 565 VIA_SUPERIO(obj)->io_ops = &vt8231_superio_cfg_ops; 566 } 567 vt8231_superio_class_init(ObjectClass * klass,void * data)568 static void vt8231_superio_class_init(ObjectClass *klass, void *data) 569 { 570 DeviceClass *dc = DEVICE_CLASS(klass); 571 ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass); 572 573 device_class_set_legacy_reset(dc, vt8231_superio_reset); 574 sc->serial.count = 1; 575 sc->parallel.count = 1; 576 sc->ide.count = 0; /* emulated by via-ide */ 577 sc->floppy.count = 1; 578 } 579 580 static const TypeInfo vt8231_superio_info = { 581 .name = TYPE_VT8231_SUPERIO, 582 .parent = TYPE_VIA_SUPERIO, 583 .instance_size = sizeof(ViaSuperIOState), 584 .instance_init = vt8231_superio_init, 585 .class_size = sizeof(ISASuperIOClass), 586 .class_init = vt8231_superio_class_init, 587 }; 588 589 590 #define TYPE_VIA_ISA "via-isa" 591 OBJECT_DECLARE_SIMPLE_TYPE(ViaISAState, VIA_ISA) 592 593 struct ViaISAState { 594 PCIDevice dev; 595 596 IRQState i8259_irq; 597 qemu_irq cpu_intr; 598 qemu_irq *isa_irqs_in; 599 uint16_t irq_state[ISA_NUM_IRQS]; 600 ViaSuperIOState via_sio; 601 MC146818RtcState rtc; 602 PCIIDEState ide; 603 UHCIPCIState uhci[2]; 604 ViaPMState pm; 605 ViaAC97State ac97; 606 PCIDevice mc97; 607 }; 608 609 static const VMStateDescription vmstate_via = { 610 .name = "via-isa", 611 .version_id = 1, 612 .minimum_version_id = 1, 613 .fields = (const VMStateField[]) { 614 VMSTATE_PCI_DEVICE(dev, ViaISAState), 615 VMSTATE_END_OF_LIST() 616 } 617 }; 618 via_isa_init(Object * obj)619 static void via_isa_init(Object *obj) 620 { 621 ViaISAState *s = VIA_ISA(obj); 622 623 object_initialize_child(obj, "rtc", &s->rtc, TYPE_MC146818_RTC); 624 object_initialize_child(obj, "ide", &s->ide, TYPE_VIA_IDE); 625 object_initialize_child(obj, "uhci1", &s->uhci[0], TYPE_VT82C686B_USB_UHCI); 626 object_initialize_child(obj, "uhci2", &s->uhci[1], TYPE_VT82C686B_USB_UHCI); 627 object_initialize_child(obj, "ac97", &s->ac97, TYPE_VIA_AC97); 628 object_initialize_child(obj, "mc97", &s->mc97, TYPE_VIA_MC97); 629 } 630 631 static const TypeInfo via_isa_info = { 632 .name = TYPE_VIA_ISA, 633 .parent = TYPE_PCI_DEVICE, 634 .instance_size = sizeof(ViaISAState), 635 .instance_init = via_isa_init, 636 .abstract = true, 637 .interfaces = (InterfaceInfo[]) { 638 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 639 { }, 640 }, 641 }; 642 via_isa_get_pci_irq(const ViaISAState * s,int pin)643 static int via_isa_get_pci_irq(const ViaISAState *s, int pin) 644 { 645 switch (pin) { 646 case 0: 647 return s->dev.config[0x55] >> 4; 648 case 1: 649 return s->dev.config[0x56] & 0xf; 650 case 2: 651 return s->dev.config[0x56] >> 4; 652 case 3: 653 return s->dev.config[0x57] >> 4; 654 } 655 return 0; 656 } 657 via_isa_set_irq(PCIDevice * d,int pin,int level)658 void via_isa_set_irq(PCIDevice *d, int pin, int level) 659 { 660 ViaISAState *s = VIA_ISA(pci_get_function_0(d)); 661 uint8_t irq = d->config[PCI_INTERRUPT_LINE], max_irq = 15; 662 int f = PCI_FUNC(d->devfn); 663 uint16_t mask; 664 665 switch (f) { 666 case 0: /* PIRQ/PINT inputs */ 667 irq = via_isa_get_pci_irq(s, pin); 668 f = 8 + pin; /* Use function 8-11 for PCI interrupt inputs */ 669 break; 670 case 2: /* USB ports 0-1 */ 671 case 3: /* USB ports 2-3 */ 672 case 5: /* AC97 audio */ 673 max_irq = 14; 674 break; 675 } 676 677 /* Keep track of the state of all sources */ 678 mask = BIT(f); 679 if (level) { 680 s->irq_state[0] |= mask; 681 } else { 682 s->irq_state[0] &= ~mask; 683 } 684 if (irq == 0 || irq == 0xff) { 685 return; /* disabled */ 686 } 687 if (unlikely(irq > max_irq || irq == 2)) { 688 qemu_log_mask(LOG_GUEST_ERROR, "Invalid ISA IRQ routing %d for %d", 689 irq, f); 690 return; 691 } 692 /* Record source state at mapped IRQ */ 693 if (level) { 694 s->irq_state[irq] |= mask; 695 } else { 696 s->irq_state[irq] &= ~mask; 697 } 698 /* Make sure there are no stuck bits if mapping has changed */ 699 s->irq_state[irq] &= s->irq_state[0]; 700 /* ISA IRQ level is the OR of all sources routed to it */ 701 qemu_set_irq(s->isa_irqs_in[irq], !!s->irq_state[irq]); 702 } 703 via_isa_pirq(void * opaque,int pin,int level)704 static void via_isa_pirq(void *opaque, int pin, int level) 705 { 706 via_isa_set_irq(opaque, pin, level); 707 } 708 via_isa_request_i8259_irq(void * opaque,int irq,int level)709 static void via_isa_request_i8259_irq(void *opaque, int irq, int level) 710 { 711 ViaISAState *s = opaque; 712 qemu_set_irq(s->cpu_intr, level); 713 } 714 via_isa_realize(PCIDevice * d,Error ** errp)715 static void via_isa_realize(PCIDevice *d, Error **errp) 716 { 717 ViaISAState *s = VIA_ISA(d); 718 DeviceState *dev = DEVICE(d); 719 PCIBus *pci_bus = pci_get_bus(d); 720 ISABus *isa_bus; 721 int i; 722 723 qdev_init_gpio_out_named(dev, &s->cpu_intr, "intr", 1); 724 qdev_init_gpio_in_named(dev, via_isa_pirq, "pirq", PCI_NUM_PINS); 725 qemu_init_irq(&s->i8259_irq, via_isa_request_i8259_irq, s, 0); 726 isa_bus = isa_bus_new(dev, pci_address_space(d), pci_address_space_io(d), 727 errp); 728 729 if (!isa_bus) { 730 return; 731 } 732 733 s->isa_irqs_in = i8259_init(isa_bus, &s->i8259_irq); 734 isa_bus_register_input_irqs(isa_bus, s->isa_irqs_in); 735 i8254_pit_init(isa_bus, 0x40, 0, NULL); 736 i8257_dma_init(OBJECT(d), isa_bus, 0); 737 738 /* RTC */ 739 qdev_prop_set_int32(DEVICE(&s->rtc), "base_year", 2000); 740 if (!qdev_realize(DEVICE(&s->rtc), BUS(isa_bus), errp)) { 741 return; 742 } 743 isa_connect_gpio_out(ISA_DEVICE(&s->rtc), 0, s->rtc.isairq); 744 745 for (i = 0; i < PCI_CONFIG_HEADER_SIZE; i++) { 746 if (i < PCI_COMMAND || i >= PCI_REVISION_ID) { 747 d->wmask[i] = 0; 748 } 749 } 750 751 /* Super I/O */ 752 if (!qdev_realize(DEVICE(&s->via_sio), BUS(isa_bus), errp)) { 753 return; 754 } 755 756 /* Function 1: IDE */ 757 qdev_prop_set_int32(DEVICE(&s->ide), "addr", d->devfn + 1); 758 if (!qdev_realize(DEVICE(&s->ide), BUS(pci_bus), errp)) { 759 return; 760 } 761 for (i = 0; i < 2; i++) { 762 qdev_connect_gpio_out_named(DEVICE(&s->ide), "isa-irq", i, 763 s->isa_irqs_in[14 + i]); 764 } 765 766 /* Functions 2-3: USB Ports */ 767 for (i = 0; i < ARRAY_SIZE(s->uhci); i++) { 768 qdev_prop_set_int32(DEVICE(&s->uhci[i]), "addr", d->devfn + 2 + i); 769 if (!qdev_realize(DEVICE(&s->uhci[i]), BUS(pci_bus), errp)) { 770 return; 771 } 772 } 773 774 /* Function 4: Power Management */ 775 qdev_prop_set_int32(DEVICE(&s->pm), "addr", d->devfn + 4); 776 if (!qdev_realize(DEVICE(&s->pm), BUS(pci_bus), errp)) { 777 return; 778 } 779 780 /* Function 5: AC97 Audio */ 781 qdev_prop_set_int32(DEVICE(&s->ac97), "addr", d->devfn + 5); 782 if (!qdev_realize(DEVICE(&s->ac97), BUS(pci_bus), errp)) { 783 return; 784 } 785 786 /* Function 6: MC97 Modem */ 787 qdev_prop_set_int32(DEVICE(&s->mc97), "addr", d->devfn + 6); 788 if (!qdev_realize(DEVICE(&s->mc97), BUS(pci_bus), errp)) { 789 return; 790 } 791 } 792 793 /* TYPE_VT82C686B_ISA */ 794 vt82c686b_write_config(PCIDevice * d,uint32_t addr,uint32_t val,int len)795 static void vt82c686b_write_config(PCIDevice *d, uint32_t addr, 796 uint32_t val, int len) 797 { 798 ViaISAState *s = VIA_ISA(d); 799 800 trace_via_isa_write(addr, val, len); 801 pci_default_write_config(d, addr, val, len); 802 if (addr == 0x85) { 803 /* BIT(1): enable or disable superio config io ports */ 804 via_superio_io_enable(&s->via_sio, val & BIT(1)); 805 } 806 } 807 vt82c686b_isa_reset(DeviceState * dev)808 static void vt82c686b_isa_reset(DeviceState *dev) 809 { 810 ViaISAState *s = VIA_ISA(dev); 811 uint8_t *pci_conf = s->dev.config; 812 813 pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0); 814 pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY | 815 PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL); 816 pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM); 817 818 pci_conf[0x48] = 0x01; /* Miscellaneous Control 3 */ 819 pci_conf[0x4a] = 0x04; /* IDE interrupt Routing */ 820 pci_conf[0x4f] = 0x03; /* DMA/Master Mem Access Control 3 */ 821 pci_conf[0x50] = 0x2d; /* PnP DMA Request Control */ 822 pci_conf[0x59] = 0x04; 823 pci_conf[0x5a] = 0x04; /* KBC/RTC Control*/ 824 pci_conf[0x5f] = 0x04; 825 pci_conf[0x77] = 0x10; /* GPIO Control 1/2/3/4 */ 826 } 827 vt82c686b_init(Object * obj)828 static void vt82c686b_init(Object *obj) 829 { 830 ViaISAState *s = VIA_ISA(obj); 831 832 object_initialize_child(obj, "sio", &s->via_sio, TYPE_VT82C686B_SUPERIO); 833 object_initialize_child(obj, "pm", &s->pm, TYPE_VT82C686B_PM); 834 } 835 vt82c686b_class_init(ObjectClass * klass,void * data)836 static void vt82c686b_class_init(ObjectClass *klass, void *data) 837 { 838 DeviceClass *dc = DEVICE_CLASS(klass); 839 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 840 841 k->realize = via_isa_realize; 842 k->config_write = vt82c686b_write_config; 843 k->vendor_id = PCI_VENDOR_ID_VIA; 844 k->device_id = PCI_DEVICE_ID_VIA_82C686B_ISA; 845 k->class_id = PCI_CLASS_BRIDGE_ISA; 846 k->revision = 0x40; 847 device_class_set_legacy_reset(dc, vt82c686b_isa_reset); 848 dc->desc = "ISA bridge"; 849 dc->vmsd = &vmstate_via; 850 /* Reason: part of VIA VT82C686 southbridge, needs to be wired up */ 851 dc->user_creatable = false; 852 } 853 854 static const TypeInfo vt82c686b_isa_info = { 855 .name = TYPE_VT82C686B_ISA, 856 .parent = TYPE_VIA_ISA, 857 .instance_size = sizeof(ViaISAState), 858 .instance_init = vt82c686b_init, 859 .class_init = vt82c686b_class_init, 860 }; 861 862 /* TYPE_VT8231_ISA */ 863 vt8231_write_config(PCIDevice * d,uint32_t addr,uint32_t val,int len)864 static void vt8231_write_config(PCIDevice *d, uint32_t addr, 865 uint32_t val, int len) 866 { 867 ViaISAState *s = VIA_ISA(d); 868 869 trace_via_isa_write(addr, val, len); 870 pci_default_write_config(d, addr, val, len); 871 if (addr == 0x50) { 872 /* BIT(2): enable or disable superio config io ports */ 873 via_superio_io_enable(&s->via_sio, val & BIT(2)); 874 } 875 } 876 vt8231_isa_reset(DeviceState * dev)877 static void vt8231_isa_reset(DeviceState *dev) 878 { 879 ViaISAState *s = VIA_ISA(dev); 880 uint8_t *pci_conf = s->dev.config; 881 882 pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0); 883 pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY | 884 PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL); 885 pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM); 886 887 pci_conf[0x4c] = 0x04; /* IDE interrupt Routing */ 888 pci_conf[0x58] = 0x40; /* Miscellaneous Control 0 */ 889 pci_conf[0x67] = 0x08; /* Fast IR Config */ 890 pci_conf[0x6b] = 0x01; /* Fast IR I/O Base */ 891 } 892 vt8231_init(Object * obj)893 static void vt8231_init(Object *obj) 894 { 895 ViaISAState *s = VIA_ISA(obj); 896 897 object_initialize_child(obj, "sio", &s->via_sio, TYPE_VT8231_SUPERIO); 898 object_initialize_child(obj, "pm", &s->pm, TYPE_VT8231_PM); 899 } 900 vt8231_class_init(ObjectClass * klass,void * data)901 static void vt8231_class_init(ObjectClass *klass, void *data) 902 { 903 DeviceClass *dc = DEVICE_CLASS(klass); 904 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 905 906 k->realize = via_isa_realize; 907 k->config_write = vt8231_write_config; 908 k->vendor_id = PCI_VENDOR_ID_VIA; 909 k->device_id = PCI_DEVICE_ID_VIA_8231_ISA; 910 k->class_id = PCI_CLASS_BRIDGE_ISA; 911 k->revision = 0x10; 912 device_class_set_legacy_reset(dc, vt8231_isa_reset); 913 dc->desc = "ISA bridge"; 914 dc->vmsd = &vmstate_via; 915 /* Reason: part of VIA VT8231 southbridge, needs to be wired up */ 916 dc->user_creatable = false; 917 } 918 919 static const TypeInfo vt8231_isa_info = { 920 .name = TYPE_VT8231_ISA, 921 .parent = TYPE_VIA_ISA, 922 .instance_size = sizeof(ViaISAState), 923 .instance_init = vt8231_init, 924 .class_init = vt8231_class_init, 925 }; 926 927 vt82c686b_register_types(void)928 static void vt82c686b_register_types(void) 929 { 930 type_register_static(&via_pm_info); 931 type_register_static(&vt82c686b_pm_info); 932 type_register_static(&vt8231_pm_info); 933 type_register_static(&via_superio_info); 934 type_register_static(&vt82c686b_superio_info); 935 type_register_static(&vt8231_superio_info); 936 type_register_static(&via_isa_info); 937 type_register_static(&vt82c686b_isa_info); 938 type_register_static(&vt8231_isa_info); 939 } 940 941 type_init(vt82c686b_register_types) 942