hw/alpha_typhoon.c

   1 /*
   2  * DEC 21272 (TSUNAMI/TYPHOON) chipset emulation.
   3  *
   4  * Written by Richard Henderson.
   5  *
   6  * This work is licensed under the GNU GPL license version 2 or later.
   7  */
   8
   9 #include "cpu.h"
  10 #include "exec-all.h"
  11 #include "hw.h"
  12 #include "devices.h"
  13 #include "sysemu.h"
  14 #include "alpha_sys.h"
  15 #include "exec-memory.h"
  16
  17
  18 typedef struct TyphoonCchip {
  19     MemoryRegion region;
  20     uint64_t misc;
  21     uint64_t drir;
  22     uint64_t dim[4];
  23     uint32_t iic[4];
  24     CPUState *cpu[4];
  25 } TyphoonCchip;
  26
  27 typedef struct TyphoonWindow {
  28     uint32_t base_addr;
  29     uint32_t mask;
  30     uint32_t translated_base_pfn;
  31 } TyphoonWindow;
  32
  33 typedef struct TyphoonPchip {
  34     MemoryRegion region;
  35     MemoryRegion reg_iack;
  36     MemoryRegion reg_mem;
  37     MemoryRegion reg_io;
  38     MemoryRegion reg_conf;
  39     uint64_t ctl;
  40     TyphoonWindow win[4];
  41 } TyphoonPchip;
  42
  43 typedef struct TyphoonState {
  44     PCIHostState host;
  45     TyphoonCchip cchip;
  46     TyphoonPchip pchip;
  47     MemoryRegion dchip_region;
  48     MemoryRegion ram_region;
  49
  50     /* QEMU emulation state.  */
  51     uint32_t latch_tmp;
  52 } TyphoonState;
  53
  54 /* Called when one of DRIR or DIM changes.  */
  55 static void cpu_irq_change(CPUState *env, uint64_t req)
  56 {
  57     /* If there are any non-masked interrupts, tell the cpu.  */
  58     if (env) {
  59         if (req) {
  60             cpu_interrupt(env, CPU_INTERRUPT_HARD);
  61         } else {
  62             cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
  63         }
  64     }
  65 }
  66
  67 static uint64_t cchip_read(void *opaque, target_phys_addr_t addr, unsigned size)
  68 {
  69     CPUState *env = cpu_single_env;
  70     TyphoonState *s = opaque;
  71     uint64_t ret = 0;
  72
  73     if (addr & 4) {
  74         return s->latch_tmp;
  75     }
  76
  77     switch (addr) {
  78     case 0x0000:
  79         /* CSC: Cchip System Configuration Register.  */
  80         /* All sorts of data here; probably the only thing relevant is
  81            PIP<14> Pchip 1 Present = 0.  */
  82         break;
  83
  84     case 0x0040:
  85         /* MTR: Memory Timing Register.  */
  86         /* All sorts of stuff related to real DRAM.  */
  87         break;
  88
  89     case 0x0080:
  90         /* MISC: Miscellaneous Register.  */
  91         ret = s->cchip.misc | (env->cpu_index & 3);
  92         break;
  93
  94     case 0x00c0:
  95         /* MPD: Memory Presence Detect Register.  */
  96         break;
  97
  98     case 0x0100: /* AAR0 */
  99     case 0x0140: /* AAR1 */
 100     case 0x0180: /* AAR2 */
 101     case 0x01c0: /* AAR3 */
 102         /* AAR: Array Address Register.  */
 103         /* All sorts of information about DRAM.  */
 104         break;
 105
 106     case 0x0200:
 107         /* DIM0: Device Interrupt Mask Register, CPU0.  */
 108         ret = s->cchip.dim[0];
 109         break;
 110     case 0x0240:
 111         /* DIM1: Device Interrupt Mask Register, CPU1.  */
 112         ret = s->cchip.dim[1];
 113         break;
 114     case 0x0280:
 115         /* DIR0: Device Interrupt Request Register, CPU0.  */
 116         ret = s->cchip.dim[0] & s->cchip.drir;
 117         break;
 118     case 0x02c0:
 119         /* DIR1: Device Interrupt Request Register, CPU1.  */
 120         ret = s->cchip.dim[1] & s->cchip.drir;
 121         break;
 122     case 0x0300:
 123         /* DRIR: Device Raw Interrupt Request Register.  */
 124         ret = s->cchip.drir;
 125         break;
 126
 127     case 0x0340:
 128         /* PRBEN: Probe Enable Register.  */
 129         break;
 130
 131     case 0x0380:
 132         /* IIC0: Interval Ignore Count Register, CPU0.  */
 133         ret = s->cchip.iic[0];
 134         break;
 135     case 0x03c0:
 136         /* IIC1: Interval Ignore Count Register, CPU1.  */
 137         ret = s->cchip.iic[1];
 138         break;
 139
 140     case 0x0400: /* MPR0 */
 141     case 0x0440: /* MPR1 */
 142     case 0x0480: /* MPR2 */
 143     case 0x04c0: /* MPR3 */
 144         /* MPR: Memory Programming Register.  */
 145         break;
 146
 147     case 0x0580:
 148         /* TTR: TIGbus Timing Register.  */
 149         /* All sorts of stuff related to interrupt delivery timings.  */
 150         break;
 151     case 0x05c0:
 152         /* TDR: TIGbug Device Timing Register.  */
 153         break;
 154
 155     case 0x0600:
 156         /* DIM2: Device Interrupt Mask Register, CPU2.  */
 157         ret = s->cchip.dim[2];
 158         break;
 159     case 0x0640:
 160         /* DIM3: Device Interrupt Mask Register, CPU3.  */
 161         ret = s->cchip.dim[3];
 162         break;
 163     case 0x0680:
 164         /* DIR2: Device Interrupt Request Register, CPU2.  */
 165         ret = s->cchip.dim[2] & s->cchip.drir;
 166         break;
 167     case 0x06c0:
 168         /* DIR3: Device Interrupt Request Register, CPU3.  */
 169         ret = s->cchip.dim[3] & s->cchip.drir;
 170         break;
 171
 172     case 0x0700:
 173         /* IIC2: Interval Ignore Count Register, CPU2.  */
 174         ret = s->cchip.iic[2];
 175         break;
 176     case 0x0740:
 177         /* IIC3: Interval Ignore Count Register, CPU3.  */
 178         ret = s->cchip.iic[3];
 179         break;
 180
 181     case 0x0780:
 182         /* PWR: Power Management Control.   */
 183         break;
 184
 185     case 0x0c00: /* CMONCTLA */
 186     case 0x0c40: /* CMONCTLB */
 187     case 0x0c80: /* CMONCNT01 */
 188     case 0x0cc0: /* CMONCNT23 */
 189         break;
 190
 191     default:
 192         cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, size);
 193         return -1;
 194     }
 195
 196     s->latch_tmp = ret >> 32;
 197     return ret;
 198 }
 199
 200 static uint64_t dchip_read(void *opaque, target_phys_addr_t addr, unsigned size)
 201 {
 202     /* Skip this.  It's all related to DRAM timing and setup.  */
 203     return 0;
 204 }
 205
 206 static uint64_t pchip_read(void *opaque, target_phys_addr_t addr, unsigned size)
 207 {
 208     TyphoonState *s = opaque;
 209     uint64_t ret = 0;
 210
 211     if (addr & 4) {
 212         return s->latch_tmp;
 213     }
 214
 215     switch (addr) {
 216     case 0x0000:
 217         /* WSBA0: Window Space Base Address Register.  */
 218         ret = s->pchip.win[0].base_addr;
 219         break;
 220     case 0x0040:
 221         /* WSBA1 */
 222         ret = s->pchip.win[1].base_addr;
 223         break;
 224     case 0x0080:
 225         /* WSBA2 */
 226         ret = s->pchip.win[2].base_addr;
 227         break;
 228     case 0x00c0:
 229         /* WSBA3 */
 230         ret = s->pchip.win[3].base_addr;
 231         break;
 232
 233     case 0x0100:
 234         /* WSM0: Window Space Mask Register.  */
 235         ret = s->pchip.win[0].mask;
 236         break;
 237     case 0x0140:
 238         /* WSM1 */
 239         ret = s->pchip.win[1].mask;
 240         break;
 241     case 0x0180:
 242         /* WSM2 */
 243         ret = s->pchip.win[2].mask;
 244         break;
 245     case 0x01c0:
 246         /* WSM3 */
 247         ret = s->pchip.win[3].mask;
 248         break;
 249
 250     case 0x0200:
 251         /* TBA0: Translated Base Address Register.  */
 252         ret = (uint64_t)s->pchip.win[0].translated_base_pfn << 10;
 253         break;
 254     case 0x0240:
 255         /* TBA1 */
 256         ret = (uint64_t)s->pchip.win[1].translated_base_pfn << 10;
 257         break;
 258     case 0x0280:
 259         /* TBA2 */
 260         ret = (uint64_t)s->pchip.win[2].translated_base_pfn << 10;
 261         break;
 262     case 0x02c0:
 263         /* TBA3 */
 264         ret = (uint64_t)s->pchip.win[3].translated_base_pfn << 10;
 265         break;
 266
 267     case 0x0300:
 268         /* PCTL: Pchip Control Register.  */
 269         ret = s->pchip.ctl;
 270         break;
 271     case 0x0340:
 272         /* PLAT: Pchip Master Latency Register.  */
 273         break;
 274     case 0x03c0:
 275         /* PERROR: Pchip Error Register.  */
 276         break;
 277     case 0x0400:
 278         /* PERRMASK: Pchip Error Mask Register.  */
 279         break;
 280     case 0x0440:
 281         /* PERRSET: Pchip Error Set Register.  */
 282         break;
 283     case 0x0480:
 284         /* TLBIV: Translation Buffer Invalidate Virtual Register (WO).  */
 285         break;
 286     case 0x04c0:
 287         /* TLBIA: Translation Buffer Invalidate All Register (WO).  */
 288         break;
 289     case 0x0500: /* PMONCTL */
 290     case 0x0540: /* PMONCNT */
 291     case 0x0800: /* SPRST */
 292         break;
 293
 294     default:
 295         cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, size);
 296         return -1;
 297     }
 298
 299     s->latch_tmp = ret >> 32;
 300     return ret;
 301 }
 302
 303 static void cchip_write(void *opaque, target_phys_addr_t addr,
 304                         uint64_t v32, unsigned size)
 305 {
 306     TyphoonState *s = opaque;
 307     uint64_t val, oldval, newval;
 308
 309     if (addr & 4) {
 310         val = v32 << 32 | s->latch_tmp;
 311         addr ^= 4;
 312     } else {
 313         s->latch_tmp = v32;
 314         return;
 315     }
 316
 317     switch (addr) {
 318     case 0x0000:
 319         /* CSC: Cchip System Configuration Register.  */
 320         /* All sorts of data here; nothing relevant RW.  */
 321         break;
 322
 323     case 0x0040:
 324         /* MTR: Memory Timing Register.  */
 325         /* All sorts of stuff related to real DRAM.  */
 326         break;
 327
 328     case 0x0080:
 329         /* MISC: Miscellaneous Register.  */
 330         newval = oldval = s->cchip.misc;
 331         newval &= ~(val & 0x10000ff0);     /* W1C fields */
 332         if (val & 0x100000) {
 333             newval &= ~0xff0000ull;        /* ACL clears ABT and ABW */
 334         } else {
 335             newval |= val & 0x00f00000;    /* ABT field is W1S */
 336             if ((newval & 0xf0000) == 0) {
 337                 newval |= val & 0xf0000;   /* ABW field is W1S iff zero */
 338             }
 339         }
 340         newval |= (val & 0xf000) >> 4;     /* IPREQ field sets IPINTR.  */
 341
 342         newval &= ~0xf0000000000ull;       /* WO and RW fields */
 343         newval |= val & 0xf0000000000ull;
 344         s->cchip.misc = newval;
 345
 346         /* Pass on changes to IPI and ITI state.  */
 347         if ((newval ^ oldval) & 0xff0) {
 348             int i;
 349             for (i = 0; i < 4; ++i) {
 350                 CPUState *env = s->cchip.cpu[i];
 351                 if (env) {
 352                     /* IPI can be either cleared or set by the write.  */
 353                     if (newval & (1 << (i + 8))) {
 354                         cpu_interrupt(env, CPU_INTERRUPT_SMP);
 355                     } else {
 356                         cpu_reset_interrupt(env, CPU_INTERRUPT_SMP);
 357                     }
 358
 359                     /* ITI can only be cleared by the write.  */
 360                     if ((newval & (1 << (i + 4))) == 0) {
 361                         cpu_reset_interrupt(env, CPU_INTERRUPT_TIMER);
 362                     }
 363                 }
 364             }
 365         }
 366         break;
 367
 368     case 0x00c0:
 369         /* MPD: Memory Presence Detect Register.  */
 370         break;
 371
 372     case 0x0100: /* AAR0 */
 373     case 0x0140: /* AAR1 */
 374     case 0x0180: /* AAR2 */
 375     case 0x01c0: /* AAR3 */
 376         /* AAR: Array Address Register.  */
 377         /* All sorts of information about DRAM.  */
 378         break;
 379
 380     case 0x0200: /* DIM0 */
 381         /* DIM: Device Interrupt Mask Register, CPU0.  */
 382         s->cchip.dim[0] = val;
 383         cpu_irq_change(s->cchip.cpu[0], val & s->cchip.drir);
 384         break;
 385     case 0x0240: /* DIM1 */
 386         /* DIM: Device Interrupt Mask Register, CPU1.  */
 387         s->cchip.dim[0] = val;
 388         cpu_irq_change(s->cchip.cpu[1], val & s->cchip.drir);
 389         break;
 390
 391     case 0x0280: /* DIR0 (RO) */
 392     case 0x02c0: /* DIR1 (RO) */
 393     case 0x0300: /* DRIR (RO) */
 394         break;
 395
 396     case 0x0340:
 397         /* PRBEN: Probe Enable Register.  */
 398         break;
 399
 400     case 0x0380: /* IIC0 */
 401         s->cchip.iic[0] = val & 0xffffff;
 402         break;
 403     case 0x03c0: /* IIC1 */
 404         s->cchip.iic[1] = val & 0xffffff;
 405         break;
 406
 407     case 0x0400: /* MPR0 */
 408     case 0x0440: /* MPR1 */
 409     case 0x0480: /* MPR2 */
 410     case 0x04c0: /* MPR3 */
 411         /* MPR: Memory Programming Register.  */
 412         break;
 413
 414     case 0x0580:
 415         /* TTR: TIGbus Timing Register.  */
 416         /* All sorts of stuff related to interrupt delivery timings.  */
 417         break;
 418     case 0x05c0:
 419         /* TDR: TIGbug Device Timing Register.  */
 420         break;
 421
 422     case 0x0600:
 423         /* DIM2: Device Interrupt Mask Register, CPU2.  */
 424         s->cchip.dim[2] = val;
 425         cpu_irq_change(s->cchip.cpu[2], val & s->cchip.drir);
 426         break;
 427     case 0x0640:
 428         /* DIM3: Device Interrupt Mask Register, CPU3.  */
 429         s->cchip.dim[3] = val;
 430         cpu_irq_change(s->cchip.cpu[3], val & s->cchip.drir);
 431         break;
 432
 433     case 0x0680: /* DIR2 (RO) */
 434     case 0x06c0: /* DIR3 (RO) */
 435         break;
 436
 437     case 0x0700: /* IIC2 */
 438         s->cchip.iic[2] = val & 0xffffff;
 439         break;
 440     case 0x0740: /* IIC3 */
 441         s->cchip.iic[3] = val & 0xffffff;
 442         break;
 443
 444     case 0x0780:
 445         /* PWR: Power Management Control.   */
 446         break;
 447
 448     case 0x0c00: /* CMONCTLA */
 449     case 0x0c40: /* CMONCTLB */
 450     case 0x0c80: /* CMONCNT01 */
 451     case 0x0cc0: /* CMONCNT23 */
 452         break;
 453
 454     default:
 455         cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, size);
 456         return;
 457     }
 458 }
 459
 460 static void dchip_write(void *opaque, target_phys_addr_t addr,
 461                         uint64_t val, unsigned size)
 462 {
 463     /* Skip this.  It's all related to DRAM timing and setup.  */
 464 }
 465
 466 static void pchip_write(void *opaque, target_phys_addr_t addr,
 467                         uint64_t v32, unsigned size)
 468 {
 469     TyphoonState *s = opaque;
 470     uint64_t val, oldval;
 471
 472     if (addr & 4) {
 473         val = v32 << 32 | s->latch_tmp;
 474         addr ^= 4;
 475     } else {
 476         s->latch_tmp = v32;
 477         return;
 478     }
 479
 480     switch (addr) {
 481     case 0x0000:
 482         /* WSBA0: Window Space Base Address Register.  */
 483         s->pchip.win[0].base_addr = val;
 484         break;
 485     case 0x0040:
 486         /* WSBA1 */
 487         s->pchip.win[1].base_addr = val;
 488         break;
 489     case 0x0080:
 490         /* WSBA2 */
 491         s->pchip.win[2].base_addr = val;
 492         break;
 493     case 0x00c0:
 494         /* WSBA3 */
 495         s->pchip.win[3].base_addr = val;
 496         break;
 497
 498     case 0x0100:
 499         /* WSM0: Window Space Mask Register.  */
 500         s->pchip.win[0].mask = val;
 501         break;
 502     case 0x0140:
 503         /* WSM1 */
 504         s->pchip.win[1].mask = val;
 505         break;
 506     case 0x0180:
 507         /* WSM2 */
 508         s->pchip.win[2].mask = val;
 509         break;
 510     case 0x01c0:
 511         /* WSM3 */
 512         s->pchip.win[3].mask = val;
 513         break;
 514
 515     case 0x0200:
 516         /* TBA0: Translated Base Address Register.  */
 517         s->pchip.win[0].translated_base_pfn = val >> 10;
 518         break;
 519     case 0x0240:
 520         /* TBA1 */
 521         s->pchip.win[1].translated_base_pfn = val >> 10;
 522         break;
 523     case 0x0280:
 524         /* TBA2 */
 525         s->pchip.win[2].translated_base_pfn = val >> 10;
 526         break;
 527     case 0x02c0:
 528         /* TBA3 */
 529         s->pchip.win[3].translated_base_pfn = val >> 10;
 530         break;
 531
 532     case 0x0300:
 533         /* PCTL: Pchip Control Register.  */
 534         oldval = s->pchip.ctl;
 535         oldval &= ~0x00001cff0fc7ffull;       /* RW fields */
 536         oldval |= val & 0x00001cff0fc7ffull;
 537
 538         s->pchip.ctl = oldval;
 539         break;
 540
 541     case 0x0340:
 542         /* PLAT: Pchip Master Latency Register.  */
 543         break;
 544     case 0x03c0:
 545         /* PERROR: Pchip Error Register.  */
 546         break;
 547     case 0x0400:
 548         /* PERRMASK: Pchip Error Mask Register.  */
 549         break;
 550     case 0x0440:
 551         /* PERRSET: Pchip Error Set Register.  */
 552         break;
 553
 554     case 0x0480:
 555         /* TLBIV: Translation Buffer Invalidate Virtual Register.  */
 556         break;
 557
 558     case 0x04c0:
 559         /* TLBIA: Translation Buffer Invalidate All Register (WO).  */
 560         break;
 561
 562     case 0x0500:
 563         /* PMONCTL */
 564     case 0x0540:
 565         /* PMONCNT */
 566     case 0x0800:
 567         /* SPRST */
 568         break;
 569
 570     default:
 571         cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, size);
 572         return;
 573     }
 574 }
 575
 576 static const MemoryRegionOps cchip_ops = {
 577     .read = cchip_read,
 578     .write = cchip_write,
 579     .endianness = DEVICE_LITTLE_ENDIAN,
 580     .valid = {
 581         .min_access_size = 4,  /* ??? Should be 8.  */
 582         .max_access_size = 8,
 583     },
 584     .impl = {
 585         .min_access_size = 4,
 586         .max_access_size = 4,
 587     },
 588 };
 589
 590 static const MemoryRegionOps dchip_ops = {
 591     .read = dchip_read,
 592     .write = dchip_write,
 593     .endianness = DEVICE_LITTLE_ENDIAN,
 594     .valid = {
 595         .min_access_size = 4,  /* ??? Should be 8.  */
 596         .max_access_size = 8,
 597     },
 598     .impl = {
 599         .min_access_size = 4,
 600         .max_access_size = 8,
 601     },
 602 };
 603
 604 static const MemoryRegionOps pchip_ops = {
 605     .read = pchip_read,
 606     .write = pchip_write,
 607     .endianness = DEVICE_LITTLE_ENDIAN,
 608     .valid = {
 609         .min_access_size = 4,  /* ??? Should be 8.  */
 610         .max_access_size = 8,
 611     },
 612     .impl = {
 613         .min_access_size = 4,
 614         .max_access_size = 4,
 615     },
 616 };
 617
 618 static void typhoon_set_irq(void *opaque, int irq, int level)
 619 {
 620     TyphoonState *s = opaque;
 621     uint64_t drir;
 622     int i;
 623
 624     /* Set/Reset the bit in CCHIP.DRIR based on IRQ+LEVEL.  */
 625     drir = s->cchip.drir;
 626     if (level) {
 627         drir |= 1ull << irq;
 628     } else {
 629         drir &= ~(1ull << irq);
 630     }
 631     s->cchip.drir = drir;
 632
 633     for (i = 0; i < 4; ++i) {
 634         cpu_irq_change(s->cchip.cpu[i], s->cchip.dim[i] & drir);
 635     }
 636 }
 637
 638 static void typhoon_set_isa_irq(void *opaque, int irq, int level)
 639 {
 640     typhoon_set_irq(opaque, 55, level);
 641 }
 642
 643 static void typhoon_set_timer_irq(void *opaque, int irq, int level)
 644 {
 645     TyphoonState *s = opaque;
 646     int i;
 647
 648     /* Thankfully, the mc146818rtc code doesn't track the IRQ state,
 649        and so we don't have to worry about missing interrupts just
 650        because we never actually ACK the interrupt.  Just ignore any
 651        case of the interrupt level going low.  */
 652     if (level == 0) {
 653         return;
 654     }
 655
 656     /* Deliver the interrupt to each CPU, considering each CPU's IIC.  */
 657     for (i = 0; i < 4; ++i) {
 658         CPUState *env = s->cchip.cpu[i];
 659         if (env) {
 660             uint32_t iic = s->cchip.iic[i];
 661
 662             /* ??? The verbage in Section 10.2.2.10 isn't 100% clear.
 663                Bit 24 is the OverFlow bit, RO, and set when the count
 664                decrements past 0.  When is OF cleared?  My guess is that
 665                OF is actually cleared when the IIC is written, and that
 666                the ICNT field always decrements.  At least, that's an
 667                interpretation that makes sense, and "allows the CPU to
 668                determine exactly how mant interval timer ticks were
 669                skipped".  At least within the next 4M ticks...  */
 670
 671             iic = ((iic - 1) & 0x1ffffff) | (iic & 0x1000000);
 672             s->cchip.iic[i] = iic;
 673
 674             if (iic & 0x1000000) {
 675                 /* Set the ITI bit for this cpu.  */
 676                 s->cchip.misc |= 1 << (i + 4);
 677                 /* And signal the interrupt.  */
 678                 cpu_interrupt(env, CPU_INTERRUPT_TIMER);
 679             }
 680         }
 681     }
 682 }
 683
 684 static void typhoon_alarm_timer(void *opaque)
 685 {
 686     TyphoonState *s = (TyphoonState *)((uintptr_t)opaque & ~3);
 687     int cpu = (uintptr_t)opaque & 3;
 688
 689     /* Set the ITI bit for this cpu.  */
 690     s->cchip.misc |= 1 << (cpu + 4);
 691     cpu_interrupt(s->cchip.cpu[cpu], CPU_INTERRUPT_TIMER);
 692 }
 693
 694 PCIBus *typhoon_init(ram_addr_t ram_size, qemu_irq *p_rtc_irq,
 695                      CPUState *cpus[4], pci_map_irq_fn sys_map_irq)
 696 {
 697     const uint64_t MB = 1024 * 1024;
 698     const uint64_t GB = 1024 * MB;
 699     MemoryRegion *addr_space = get_system_memory();
 700     MemoryRegion *addr_space_io = get_system_io();
 701     DeviceState *dev;
 702     PCIHostState *p;
 703     TyphoonState *s;
 704     PCIBus *b;
 705     int i;
 706
 707     dev = qdev_create(NULL, "typhoon-pcihost");
 708     qdev_init_nofail(dev);
 709
 710     p = FROM_SYSBUS(PCIHostState, sysbus_from_qdev(dev));
 711     s = container_of(p, TyphoonState, host);
 712
 713     /* Remember the CPUs so that we can deliver interrupts to them.  */
 714     for (i = 0; i < 4; i++) {
 715         CPUState *env = cpus[i];
 716         s->cchip.cpu[i] = env;
 717         if (env) {
 718             env->alarm_timer = qemu_new_timer_ns(rtc_clock,
 719                                                  typhoon_alarm_timer,
 720                                                  (void *)((uintptr_t)s + i));
 721         }
 722     }
 723
 724     *p_rtc_irq = *qemu_allocate_irqs(typhoon_set_timer_irq, s, 1);
 725
 726     /* Main memory region, 0x00.0000.0000.  Real hardware supports 32GB,
 727        but the address space hole reserved at this point is 8TB.  */
 728     memory_region_init_ram(&s->ram_region, NULL, "ram", ram_size);
 729     memory_region_add_subregion(addr_space, 0, &s->ram_region);
 730
 731     /* TIGbus, 0x801.0000.0000, 1GB.  */
 732     /* ??? The TIGbus is used for delivering interrupts, and access to
 733        the flash ROM.  I'm not sure that we need to implement it at all.  */
 734
 735     /* Pchip0 CSRs, 0x801.8000.0000, 256MB.  */
 736     memory_region_init_io(&s->pchip.region, &pchip_ops, s, "pchip0", 256*MB);
 737     memory_region_add_subregion(addr_space, 0x80180000000ULL,
 738                                 &s->pchip.region);
 739
 740     /* Cchip CSRs, 0x801.A000.0000, 256MB.  */
 741     memory_region_init_io(&s->cchip.region, &cchip_ops, s, "cchip0", 256*MB);
 742     memory_region_add_subregion(addr_space, 0x801a0000000ULL,
 743                                 &s->cchip.region);
 744
 745     /* Dchip CSRs, 0x801.B000.0000, 256MB.  */
 746     memory_region_init_io(&s->dchip_region, &dchip_ops, s, "dchip0", 256*MB);
 747     memory_region_add_subregion(addr_space, 0x801b0000000ULL,
 748                                 &s->dchip_region);
 749
 750     /* Pchip0 PCI memory, 0x800.0000.0000, 4GB.  */
 751     memory_region_init(&s->pchip.reg_mem, "pci0-mem", 4*GB);
 752     memory_region_add_subregion(addr_space, 0x80000000000ULL,
 753                                 &s->pchip.reg_mem);
 754
 755     /* Pchip0 PCI I/O, 0x801.FC00.0000, 32MB.  */
 756     /* ??? Ideally we drop the "system" i/o space on the floor and give the
 757        PCI subsystem the full address space reserved by the chipset.
 758        We can't do that until the MEM and IO paths in memory.c are unified.  */
 759     memory_region_init_io(&s->pchip.reg_io, &alpha_pci_bw_io_ops, NULL,
 760                           "pci0-io", 32*MB);
 761     memory_region_add_subregion(addr_space, 0x801fc000000ULL,
 762                                 &s->pchip.reg_io);
 763
 764     b = pci_register_bus(&s->host.busdev.qdev, "pci",
 765                          typhoon_set_irq, sys_map_irq, s,
 766                          &s->pchip.reg_mem, addr_space_io, 0, 64);
 767     s->host.bus = b;
 768
 769     /* Pchip0 PCI special/interrupt acknowledge, 0x801.F800.0000, 64MB.  */
 770     memory_region_init_io(&s->pchip.reg_iack, &alpha_pci_iack_ops, b,
 771                           "pci0-iack", 64*MB);
 772     memory_region_add_subregion(addr_space, 0x801f8000000ULL,
 773                                 &s->pchip.reg_iack);
 774
 775     /* Pchip0 PCI configuration, 0x801.FE00.0000, 16MB.  */
 776     memory_region_init_io(&s->pchip.reg_conf, &alpha_pci_conf1_ops, b,
 777                           "pci0-conf", 16*MB);
 778     memory_region_add_subregion(addr_space, 0x801fe000000ULL,
 779                                 &s->pchip.reg_conf);
 780
 781     /* For the record, these are the mappings for the second PCI bus.
 782        We can get away with not implementing them because we indicate
 783        via the Cchip.CSC<PIP> bit that Pchip1 is not present.  */
 784     /* Pchip1 PCI memory, 0x802.0000.0000, 4GB.  */
 785     /* Pchip1 CSRs, 0x802.8000.0000, 256MB.  */
 786     /* Pchip1 PCI special/interrupt acknowledge, 0x802.F800.0000, 64MB.  */
 787     /* Pchip1 PCI I/O, 0x802.FC00.0000, 32MB.  */
 788     /* Pchip1 PCI configuration, 0x802.FE00.0000, 16MB.  */
 789
 790     /* Init the ISA bus.  */
 791     /* ??? Technically there should be a cy82c693ub pci-isa bridge.  */
 792     {
 793         qemu_irq isa_pci_irq, *isa_irqs;
 794
 795         isa_bus_new(NULL, addr_space_io);
 796         isa_pci_irq = *qemu_allocate_irqs(typhoon_set_isa_irq, s, 1);
 797         isa_irqs = i8259_init(isa_pci_irq);
 798         isa_bus_irqs(isa_irqs);
 799     }
 800
 801     return b;
 802 }
 803
 804 static int typhoon_pcihost_init(SysBusDevice *dev)
 805 {
 806     return 0;
 807 }
 808
 809 static SysBusDeviceInfo typhoon_pcihost_info = {
 810     .init = typhoon_pcihost_init,
 811     .qdev.name = "typhoon-pcihost",
 812     .qdev.size = sizeof(TyphoonState),
 813     .qdev.no_user = 1
 814 };
 815
 816 static void typhoon_register(void)
 817 {
 818     sysbus_register_withprop(&typhoon_pcihost_info);
 819 }
 820 device_init(typhoon_register);