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[0xff]; 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 int can_write; 54 SuperIOConfig *superio_conf = opaque; 55 56 DPRINTF("superio_ioport_writeb address 0x%x val 0x%x\n", addr, data); 57 if (addr == 0x3f0) { 58 superio_conf->index = data & 0xff; 59 } else { 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 = 0; 72 break; 73 default: 74 can_write = 1; 75 76 if (can_write) { 77 switch (superio_conf->index) { 78 case 0xe7: 79 if ((data & 0xff) != 0xfe) { 80 DPRINTF("chage uart 1 base. unsupported yet\n"); 81 } 82 break; 83 case 0xe8: 84 if ((data & 0xff) != 0xbe) { 85 DPRINTF("chage uart 2 base. unsupported yet\n"); 86 } 87 break; 88 89 default: 90 superio_conf->config[superio_conf->index] = data & 0xff; 91 } 92 } 93 } 94 superio_conf->config[superio_conf->index] = data & 0xff; 95 } 96 } 97 98 static uint64_t superio_ioport_readb(void *opaque, hwaddr addr, unsigned size) 99 { 100 SuperIOConfig *superio_conf = opaque; 101 102 DPRINTF("superio_ioport_readb address 0x%x\n", addr); 103 return (superio_conf->config[superio_conf->index]); 104 } 105 106 static const MemoryRegionOps superio_ops = { 107 .read = superio_ioport_readb, 108 .write = superio_ioport_writeb, 109 .endianness = DEVICE_NATIVE_ENDIAN, 110 .impl = { 111 .min_access_size = 1, 112 .max_access_size = 1, 113 }, 114 }; 115 116 static void vt82c686b_reset(void * opaque) 117 { 118 PCIDevice *d = opaque; 119 uint8_t *pci_conf = d->config; 120 VT82C686BState *vt82c = DO_UPCAST(VT82C686BState, dev, d); 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 = DO_UPCAST(VT82C686BState, dev, 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 static void pm_update_sci(VT686PMState *s) 179 { 180 int sci_level, pmsts; 181 182 pmsts = acpi_pm1_evt_get_sts(&s->ar); 183 sci_level = (((pmsts & s->ar.pm1.evt.en) & 184 (ACPI_BITMASK_RT_CLOCK_ENABLE | 185 ACPI_BITMASK_POWER_BUTTON_ENABLE | 186 ACPI_BITMASK_GLOBAL_LOCK_ENABLE | 187 ACPI_BITMASK_TIMER_ENABLE)) != 0); 188 pci_set_irq(&s->dev, sci_level); 189 /* schedule a timer interruption if needed */ 190 acpi_pm_tmr_update(&s->ar, (s->ar.pm1.evt.en & ACPI_BITMASK_TIMER_ENABLE) && 191 !(pmsts & ACPI_BITMASK_TIMER_STATUS)); 192 } 193 194 static void pm_tmr_timer(ACPIREGS *ar) 195 { 196 VT686PMState *s = container_of(ar, VT686PMState, ar); 197 pm_update_sci(s); 198 } 199 200 static void pm_io_space_update(VT686PMState *s) 201 { 202 uint32_t pm_io_base; 203 204 pm_io_base = pci_get_long(s->dev.config + 0x40); 205 pm_io_base &= 0xffc0; 206 207 memory_region_transaction_begin(); 208 memory_region_set_enabled(&s->io, s->dev.config[0x80] & 1); 209 memory_region_set_address(&s->io, pm_io_base); 210 memory_region_transaction_commit(); 211 } 212 213 static void pm_write_config(PCIDevice *d, 214 uint32_t address, uint32_t val, int len) 215 { 216 DPRINTF("pm_write_config address 0x%x val 0x%x len 0x%x\n", 217 address, val, len); 218 pci_default_write_config(d, address, val, len); 219 } 220 221 static int vmstate_acpi_post_load(void *opaque, int version_id) 222 { 223 VT686PMState *s = opaque; 224 225 pm_io_space_update(s); 226 return 0; 227 } 228 229 static const VMStateDescription vmstate_acpi = { 230 .name = "vt82c686b_pm", 231 .version_id = 1, 232 .minimum_version_id = 1, 233 .post_load = vmstate_acpi_post_load, 234 .fields = (VMStateField[]) { 235 VMSTATE_PCI_DEVICE(dev, VT686PMState), 236 VMSTATE_UINT16(ar.pm1.evt.sts, VT686PMState), 237 VMSTATE_UINT16(ar.pm1.evt.en, VT686PMState), 238 VMSTATE_UINT16(ar.pm1.cnt.cnt, VT686PMState), 239 VMSTATE_STRUCT(apm, VT686PMState, 0, vmstate_apm, APMState), 240 VMSTATE_TIMER(ar.tmr.timer, VT686PMState), 241 VMSTATE_INT64(ar.tmr.overflow_time, VT686PMState), 242 VMSTATE_END_OF_LIST() 243 } 244 }; 245 246 /* 247 * TODO: vt82c686b_ac97_init() and vt82c686b_mc97_init() 248 * just register a PCI device now, functionalities will be implemented later. 249 */ 250 251 static int vt82c686b_ac97_initfn(PCIDevice *dev) 252 { 253 VT686AC97State *s = DO_UPCAST(VT686AC97State, dev, dev); 254 uint8_t *pci_conf = s->dev.config; 255 256 pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_INVALIDATE | 257 PCI_COMMAND_PARITY); 258 pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_CAP_LIST | 259 PCI_STATUS_DEVSEL_MEDIUM); 260 pci_set_long(pci_conf + PCI_INTERRUPT_PIN, 0x03); 261 262 return 0; 263 } 264 265 void vt82c686b_ac97_init(PCIBus *bus, int devfn) 266 { 267 PCIDevice *dev; 268 269 dev = pci_create(bus, devfn, "VT82C686B_AC97"); 270 qdev_init_nofail(&dev->qdev); 271 } 272 273 static void via_ac97_class_init(ObjectClass *klass, void *data) 274 { 275 DeviceClass *dc = DEVICE_CLASS(klass); 276 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 277 278 k->init = vt82c686b_ac97_initfn; 279 k->vendor_id = PCI_VENDOR_ID_VIA; 280 k->device_id = PCI_DEVICE_ID_VIA_AC97; 281 k->revision = 0x50; 282 k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO; 283 set_bit(DEVICE_CATEGORY_SOUND, dc->categories); 284 dc->desc = "AC97"; 285 } 286 287 static const TypeInfo via_ac97_info = { 288 .name = "VT82C686B_AC97", 289 .parent = TYPE_PCI_DEVICE, 290 .instance_size = sizeof(VT686AC97State), 291 .class_init = via_ac97_class_init, 292 }; 293 294 static int vt82c686b_mc97_initfn(PCIDevice *dev) 295 { 296 VT686MC97State *s = DO_UPCAST(VT686MC97State, dev, dev); 297 uint8_t *pci_conf = s->dev.config; 298 299 pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_INVALIDATE | 300 PCI_COMMAND_VGA_PALETTE); 301 pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM); 302 pci_set_long(pci_conf + PCI_INTERRUPT_PIN, 0x03); 303 304 return 0; 305 } 306 307 void vt82c686b_mc97_init(PCIBus *bus, int devfn) 308 { 309 PCIDevice *dev; 310 311 dev = pci_create(bus, devfn, "VT82C686B_MC97"); 312 qdev_init_nofail(&dev->qdev); 313 } 314 315 static void via_mc97_class_init(ObjectClass *klass, void *data) 316 { 317 DeviceClass *dc = DEVICE_CLASS(klass); 318 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 319 320 k->init = vt82c686b_mc97_initfn; 321 k->vendor_id = PCI_VENDOR_ID_VIA; 322 k->device_id = PCI_DEVICE_ID_VIA_MC97; 323 k->class_id = PCI_CLASS_COMMUNICATION_OTHER; 324 k->revision = 0x30; 325 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); 326 dc->desc = "MC97"; 327 } 328 329 static const TypeInfo via_mc97_info = { 330 .name = "VT82C686B_MC97", 331 .parent = TYPE_PCI_DEVICE, 332 .instance_size = sizeof(VT686MC97State), 333 .class_init = via_mc97_class_init, 334 }; 335 336 /* vt82c686 pm init */ 337 static int vt82c686b_pm_initfn(PCIDevice *dev) 338 { 339 VT686PMState *s = DO_UPCAST(VT686PMState, dev, dev); 340 uint8_t *pci_conf; 341 342 pci_conf = s->dev.config; 343 pci_set_word(pci_conf + PCI_COMMAND, 0); 344 pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK | 345 PCI_STATUS_DEVSEL_MEDIUM); 346 347 /* 0x48-0x4B is Power Management I/O Base */ 348 pci_set_long(pci_conf + 0x48, 0x00000001); 349 350 /* SMB ports:0xeee0~0xeeef */ 351 s->smb_io_base =((s->smb_io_base & 0xfff0) + 0x0); 352 pci_conf[0x90] = s->smb_io_base | 1; 353 pci_conf[0x91] = s->smb_io_base >> 8; 354 pci_conf[0xd2] = 0x90; 355 pm_smbus_init(&s->dev.qdev, &s->smb); 356 memory_region_add_subregion(get_system_io(), s->smb_io_base, &s->smb.io); 357 358 apm_init(dev, &s->apm, NULL, s); 359 360 memory_region_init(&s->io, OBJECT(dev), "vt82c686-pm", 64); 361 memory_region_set_enabled(&s->io, false); 362 memory_region_add_subregion(get_system_io(), 0, &s->io); 363 364 acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io); 365 acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io); 366 acpi_pm1_cnt_init(&s->ar, &s->io, 2); 367 368 return 0; 369 } 370 371 I2CBus *vt82c686b_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base, 372 qemu_irq sci_irq) 373 { 374 PCIDevice *dev; 375 VT686PMState *s; 376 377 dev = pci_create(bus, devfn, "VT82C686B_PM"); 378 qdev_prop_set_uint32(&dev->qdev, "smb_io_base", smb_io_base); 379 380 s = DO_UPCAST(VT686PMState, dev, dev); 381 382 qdev_init_nofail(&dev->qdev); 383 384 return s->smb.smbus; 385 } 386 387 static Property via_pm_properties[] = { 388 DEFINE_PROP_UINT32("smb_io_base", VT686PMState, smb_io_base, 0), 389 DEFINE_PROP_END_OF_LIST(), 390 }; 391 392 static void via_pm_class_init(ObjectClass *klass, void *data) 393 { 394 DeviceClass *dc = DEVICE_CLASS(klass); 395 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 396 397 k->init = vt82c686b_pm_initfn; 398 k->config_write = pm_write_config; 399 k->vendor_id = PCI_VENDOR_ID_VIA; 400 k->device_id = PCI_DEVICE_ID_VIA_ACPI; 401 k->class_id = PCI_CLASS_BRIDGE_OTHER; 402 k->revision = 0x40; 403 dc->desc = "PM"; 404 dc->vmsd = &vmstate_acpi; 405 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 406 dc->props = via_pm_properties; 407 } 408 409 static const TypeInfo via_pm_info = { 410 .name = "VT82C686B_PM", 411 .parent = TYPE_PCI_DEVICE, 412 .instance_size = sizeof(VT686PMState), 413 .class_init = via_pm_class_init, 414 }; 415 416 static const VMStateDescription vmstate_via = { 417 .name = "vt82c686b", 418 .version_id = 1, 419 .minimum_version_id = 1, 420 .fields = (VMStateField[]) { 421 VMSTATE_PCI_DEVICE(dev, VT82C686BState), 422 VMSTATE_END_OF_LIST() 423 } 424 }; 425 426 /* init the PCI-to-ISA bridge */ 427 static int vt82c686b_initfn(PCIDevice *d) 428 { 429 VT82C686BState *vt82c = DO_UPCAST(VT82C686BState, dev, d); 430 uint8_t *pci_conf; 431 ISABus *isa_bus; 432 uint8_t *wmask; 433 int i; 434 435 isa_bus = isa_bus_new(&d->qdev, pci_address_space_io(d)); 436 437 pci_conf = d->config; 438 pci_config_set_prog_interface(pci_conf, 0x0); 439 440 wmask = d->wmask; 441 for (i = 0x00; i < 0xff; i++) { 442 if (i<=0x03 || (i>=0x08 && i<=0x3f)) { 443 wmask[i] = 0x00; 444 } 445 } 446 447 memory_region_init_io(&vt82c->superio, OBJECT(d), &superio_ops, 448 &vt82c->superio_conf, "superio", 2); 449 memory_region_set_enabled(&vt82c->superio, false); 450 /* The floppy also uses 0x3f0 and 0x3f1. 451 * But we do not emulate a floppy, so just set it here. */ 452 memory_region_add_subregion(isa_bus->address_space_io, 0x3f0, 453 &vt82c->superio); 454 455 qemu_register_reset(vt82c686b_reset, d); 456 457 return 0; 458 } 459 460 ISABus *vt82c686b_init(PCIBus *bus, int devfn) 461 { 462 PCIDevice *d; 463 464 d = pci_create_simple_multifunction(bus, devfn, true, "VT82C686B"); 465 466 return ISA_BUS(qdev_get_child_bus(DEVICE(d), "isa.0")); 467 } 468 469 static void via_class_init(ObjectClass *klass, void *data) 470 { 471 DeviceClass *dc = DEVICE_CLASS(klass); 472 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 473 474 k->init = vt82c686b_initfn; 475 k->config_write = vt82c686b_write_config; 476 k->vendor_id = PCI_VENDOR_ID_VIA; 477 k->device_id = PCI_DEVICE_ID_VIA_ISA_BRIDGE; 478 k->class_id = PCI_CLASS_BRIDGE_ISA; 479 k->revision = 0x40; 480 dc->desc = "ISA bridge"; 481 dc->vmsd = &vmstate_via; 482 /* 483 * Reason: part of VIA VT82C686 southbridge, needs to be wired up, 484 * e.g. by mips_fulong2e_init() 485 */ 486 dc->cannot_instantiate_with_device_add_yet = true; 487 } 488 489 static const TypeInfo via_info = { 490 .name = "VT82C686B", 491 .parent = TYPE_PCI_DEVICE, 492 .instance_size = sizeof(VT82C686BState), 493 .class_init = via_class_init, 494 }; 495 496 static void vt82c686b_register_types(void) 497 { 498 type_register_static(&via_ac97_info); 499 type_register_static(&via_mc97_info); 500 type_register_static(&via_pm_info); 501 type_register_static(&via_info); 502 } 503 504 type_init(vt82c686b_register_types) 505