hw/pci-host/apb.c

   1 /*
   2  * QEMU Ultrasparc APB PCI host
   3  *
   4  * Copyright (c) 2006 Fabrice Bellard
   5  * Copyright (c) 2012,2013 Artyom Tarasenko
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23  * THE SOFTWARE.
  24  */
  25
  26 /* XXX This file and most of its contents are somewhat misnamed.  The
  27    Ultrasparc PCI host is called the PCI Bus Module (PBM).  The APB is
  28    the secondary PCI bridge.  */
  29
  30 #include "qemu/osdep.h"
  31 #include "hw/sysbus.h"
  32 #include "hw/pci/pci.h"
  33 #include "hw/pci/pci_host.h"
  34 #include "hw/pci/pci_bridge.h"
  35 #include "hw/pci/pci_bus.h"
  36 #include "hw/pci-host/apb.h"
  37 #include "sysemu/sysemu.h"
  38 #include "exec/address-spaces.h"
  39 #include "qemu/log.h"
  40
  41 /* debug APB */
  42 //#define DEBUG_APB
  43
  44 #ifdef DEBUG_APB
  45 #define APB_DPRINTF(fmt, ...) \
  46 do { printf("APB: " fmt , ## __VA_ARGS__); } while (0)
  47 #else
  48 #define APB_DPRINTF(fmt, ...)
  49 #endif
  50
  51 /* debug IOMMU */
  52 //#define DEBUG_IOMMU
  53
  54 #ifdef DEBUG_IOMMU
  55 #define IOMMU_DPRINTF(fmt, ...) \
  56 do { printf("IOMMU: " fmt , ## __VA_ARGS__); } while (0)
  57 #else
  58 #define IOMMU_DPRINTF(fmt, ...)
  59 #endif
  60
  61 /*
  62  * Chipset docs:
  63  * PBM: "UltraSPARC IIi User's Manual",
  64  * http://www.sun.com/processors/manuals/805-0087.pdf
  65  *
  66  * APB: "Advanced PCI Bridge (APB) User's Manual",
  67  * http://www.sun.com/processors/manuals/805-1251.pdf
  68  */
  69
  70 #define PBM_PCI_IMR_MASK    0x7fffffff
  71 #define PBM_PCI_IMR_ENABLED 0x80000000
  72
  73 #define POR          (1U << 31)
  74 #define SOFT_POR     (1U << 30)
  75 #define SOFT_XIR     (1U << 29)
  76 #define BTN_POR      (1U << 28)
  77 #define BTN_XIR      (1U << 27)
  78 #define RESET_MASK   0xf8000000
  79 #define RESET_WCMASK 0x98000000
  80 #define RESET_WMASK  0x60000000
  81
  82 #define MAX_IVEC 0x40
  83 #define NO_IRQ_REQUEST (MAX_IVEC + 1)
  84
  85 #define IOMMU_PAGE_SIZE_8K      (1ULL << 13)
  86 #define IOMMU_PAGE_MASK_8K      (~(IOMMU_PAGE_SIZE_8K - 1))
  87 #define IOMMU_PAGE_SIZE_64K     (1ULL << 16)
  88 #define IOMMU_PAGE_MASK_64K     (~(IOMMU_PAGE_SIZE_64K - 1))
  89
  90 #define IOMMU_NREGS             3
  91
  92 #define IOMMU_CTRL              0x0
  93 #define IOMMU_CTRL_TBW_SIZE     (1ULL << 2)
  94 #define IOMMU_CTRL_MMU_EN       (1ULL)
  95
  96 #define IOMMU_CTRL_TSB_SHIFT    16
  97
  98 #define IOMMU_BASE              0x8
  99 #define IOMMU_FLUSH             0x10
 100
 101 #define IOMMU_TTE_DATA_V        (1ULL << 63)
 102 #define IOMMU_TTE_DATA_SIZE     (1ULL << 61)
 103 #define IOMMU_TTE_DATA_W        (1ULL << 1)
 104
 105 #define IOMMU_TTE_PHYS_MASK_8K  0x1ffffffe000ULL
 106 #define IOMMU_TTE_PHYS_MASK_64K 0x1ffffff8000ULL
 107
 108 #define IOMMU_TSB_8K_OFFSET_MASK_8M    0x00000000007fe000ULL
 109 #define IOMMU_TSB_8K_OFFSET_MASK_16M   0x0000000000ffe000ULL
 110 #define IOMMU_TSB_8K_OFFSET_MASK_32M   0x0000000001ffe000ULL
 111 #define IOMMU_TSB_8K_OFFSET_MASK_64M   0x0000000003ffe000ULL
 112 #define IOMMU_TSB_8K_OFFSET_MASK_128M  0x0000000007ffe000ULL
 113 #define IOMMU_TSB_8K_OFFSET_MASK_256M  0x000000000fffe000ULL
 114 #define IOMMU_TSB_8K_OFFSET_MASK_512M  0x000000001fffe000ULL
 115 #define IOMMU_TSB_8K_OFFSET_MASK_1G    0x000000003fffe000ULL
 116
 117 #define IOMMU_TSB_64K_OFFSET_MASK_64M  0x0000000003ff0000ULL
 118 #define IOMMU_TSB_64K_OFFSET_MASK_128M 0x0000000007ff0000ULL
 119 #define IOMMU_TSB_64K_OFFSET_MASK_256M 0x000000000fff0000ULL
 120 #define IOMMU_TSB_64K_OFFSET_MASK_512M 0x000000001fff0000ULL
 121 #define IOMMU_TSB_64K_OFFSET_MASK_1G   0x000000003fff0000ULL
 122 #define IOMMU_TSB_64K_OFFSET_MASK_2G   0x000000007fff0000ULL
 123
 124 typedef struct IOMMUState {
 125     AddressSpace iommu_as;
 126     MemoryRegion iommu;
 127
 128     uint64_t regs[IOMMU_NREGS];
 129 } IOMMUState;
 130
 131 #define TYPE_APB "pbm"
 132
 133 #define APB_DEVICE(obj) \
 134     OBJECT_CHECK(APBState, (obj), TYPE_APB)
 135
 136 typedef struct APBState {
 137     PCIHostState parent_obj;
 138
 139     MemoryRegion apb_config;
 140     MemoryRegion pci_config;
 141     MemoryRegion pci_mmio;
 142     MemoryRegion pci_ioport;
 143     uint64_t pci_irq_in;
 144     IOMMUState iommu;
 145     uint32_t pci_control[16];
 146     uint32_t pci_irq_map[8];
 147     uint32_t pci_err_irq_map[4];
 148     uint32_t obio_irq_map[32];
 149     qemu_irq *pbm_irqs;
 150     qemu_irq *ivec_irqs;
 151     unsigned int irq_request;
 152     uint32_t reset_control;
 153     unsigned int nr_resets;
 154 } APBState;
 155
 156 static inline void pbm_set_request(APBState *s, unsigned int irq_num)
 157 {
 158     APB_DPRINTF("%s: request irq %d\n", __func__, irq_num);
 159
 160     s->irq_request = irq_num;
 161     qemu_set_irq(s->ivec_irqs[irq_num], 1);
 162 }
 163
 164 static inline void pbm_check_irqs(APBState *s)
 165 {
 166
 167     unsigned int i;
 168
 169     /* Previous request is not acknowledged, resubmit */
 170     if (s->irq_request != NO_IRQ_REQUEST) {
 171         pbm_set_request(s, s->irq_request);
 172         return;
 173     }
 174     /* no request pending */
 175     if (s->pci_irq_in == 0ULL) {
 176         return;
 177     }
 178     for (i = 0; i < 32; i++) {
 179         if (s->pci_irq_in & (1ULL << i)) {
 180             if (s->pci_irq_map[i >> 2] & PBM_PCI_IMR_ENABLED) {
 181                 pbm_set_request(s, i);
 182                 return;
 183             }
 184         }
 185     }
 186     for (i = 32; i < 64; i++) {
 187         if (s->pci_irq_in & (1ULL << i)) {
 188             if (s->obio_irq_map[i - 32] & PBM_PCI_IMR_ENABLED) {
 189                 pbm_set_request(s, i);
 190                 break;
 191             }
 192         }
 193     }
 194 }
 195
 196 static inline void pbm_clear_request(APBState *s, unsigned int irq_num)
 197 {
 198     APB_DPRINTF("%s: clear request irq %d\n", __func__, irq_num);
 199     qemu_set_irq(s->ivec_irqs[irq_num], 0);
 200     s->irq_request = NO_IRQ_REQUEST;
 201 }
 202
 203 static AddressSpace *pbm_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn)
 204 {
 205     IOMMUState *is = opaque;
 206
 207     return &is->iommu_as;
 208 }
 209
 210 /* Called from RCU critical section */
 211 static IOMMUTLBEntry pbm_translate_iommu(MemoryRegion *iommu, hwaddr addr,
 212                                          bool is_write)
 213 {
 214     IOMMUState *is = container_of(iommu, IOMMUState, iommu);
 215     hwaddr baseaddr, offset;
 216     uint64_t tte;
 217     uint32_t tsbsize;
 218     IOMMUTLBEntry ret = {
 219         .target_as = &address_space_memory,
 220         .iova = 0,
 221         .translated_addr = 0,
 222         .addr_mask = ~(hwaddr)0,
 223         .perm = IOMMU_NONE,
 224     };
 225
 226     if (!(is->regs[IOMMU_CTRL >> 3] & IOMMU_CTRL_MMU_EN)) {
 227         /* IOMMU disabled, passthrough using standard 8K page */
 228         ret.iova = addr & IOMMU_PAGE_MASK_8K;
 229         ret.translated_addr = addr;
 230         ret.addr_mask = IOMMU_PAGE_MASK_8K;
 231         ret.perm = IOMMU_RW;
 232
 233         return ret;
 234     }
 235
 236     baseaddr = is->regs[IOMMU_BASE >> 3];
 237     tsbsize = (is->regs[IOMMU_CTRL >> 3] >> IOMMU_CTRL_TSB_SHIFT) & 0x7;
 238
 239     if (is->regs[IOMMU_CTRL >> 3] & IOMMU_CTRL_TBW_SIZE) {
 240         /* 64K */
 241         switch (tsbsize) {
 242         case 0:
 243             offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_64M) >> 13;
 244             break;
 245         case 1:
 246             offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_128M) >> 13;
 247             break;
 248         case 2:
 249             offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_256M) >> 13;
 250             break;
 251         case 3:
 252             offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_512M) >> 13;
 253             break;
 254         case 4:
 255             offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_1G) >> 13;
 256             break;
 257         case 5:
 258             offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_2G) >> 13;
 259             break;
 260         default:
 261             /* Not implemented, error */
 262             return ret;
 263         }
 264     } else {
 265         /* 8K */
 266         switch (tsbsize) {
 267         case 0:
 268             offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_8M) >> 10;
 269             break;
 270         case 1:
 271             offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_16M) >> 10;
 272             break;
 273         case 2:
 274             offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_32M) >> 10;
 275             break;
 276         case 3:
 277             offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_64M) >> 10;
 278             break;
 279         case 4:
 280             offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_128M) >> 10;
 281             break;
 282         case 5:
 283             offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_256M) >> 10;
 284             break;
 285         case 6:
 286             offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_512M) >> 10;
 287             break;
 288         case 7:
 289             offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_1G) >> 10;
 290             break;
 291         }
 292     }
 293
 294     tte = address_space_ldq_be(&address_space_memory, baseaddr + offset,
 295                                MEMTXATTRS_UNSPECIFIED, NULL);
 296
 297     if (!(tte & IOMMU_TTE_DATA_V)) {
 298         /* Invalid mapping */
 299         return ret;
 300     }
 301
 302     if (tte & IOMMU_TTE_DATA_W) {
 303         /* Writeable */
 304         ret.perm = IOMMU_RW;
 305     } else {
 306         ret.perm = IOMMU_RO;
 307     }
 308
 309     /* Extract phys */
 310     if (tte & IOMMU_TTE_DATA_SIZE) {
 311         /* 64K */
 312         ret.iova = addr & IOMMU_PAGE_MASK_64K;
 313         ret.translated_addr = tte & IOMMU_TTE_PHYS_MASK_64K;
 314         ret.addr_mask = (IOMMU_PAGE_SIZE_64K - 1);
 315     } else {
 316         /* 8K */
 317         ret.iova = addr & IOMMU_PAGE_MASK_8K;
 318         ret.translated_addr = tte & IOMMU_TTE_PHYS_MASK_8K;
 319         ret.addr_mask = (IOMMU_PAGE_SIZE_8K - 1);
 320     }
 321
 322     return ret;
 323 }
 324
 325 static MemoryRegionIOMMUOps pbm_iommu_ops = {
 326     .translate = pbm_translate_iommu,
 327 };
 328
 329 static void iommu_config_write(void *opaque, hwaddr addr,
 330                                uint64_t val, unsigned size)
 331 {
 332     IOMMUState *is = opaque;
 333
 334     IOMMU_DPRINTF("IOMMU config write: 0x%" HWADDR_PRIx " val: %" PRIx64
 335                   " size: %d\n", addr, val, size);
 336
 337     switch (addr) {
 338     case IOMMU_CTRL:
 339         if (size == 4) {
 340             is->regs[IOMMU_CTRL >> 3] &= 0xffffffffULL;
 341             is->regs[IOMMU_CTRL >> 3] |= val << 32;
 342         } else {
 343             is->regs[IOMMU_CTRL >> 3] = val;
 344         }
 345         break;
 346     case IOMMU_CTRL + 0x4:
 347         is->regs[IOMMU_CTRL >> 3] &= 0xffffffff00000000ULL;
 348         is->regs[IOMMU_CTRL >> 3] |= val & 0xffffffffULL;
 349         break;
 350     case IOMMU_BASE:
 351         if (size == 4) {
 352             is->regs[IOMMU_BASE >> 3] &= 0xffffffffULL;
 353             is->regs[IOMMU_BASE >> 3] |= val << 32;
 354         } else {
 355             is->regs[IOMMU_BASE >> 3] = val;
 356         }
 357         break;
 358     case IOMMU_BASE + 0x4:
 359         is->regs[IOMMU_BASE >> 3] &= 0xffffffff00000000ULL;
 360         is->regs[IOMMU_BASE >> 3] |= val & 0xffffffffULL;
 361         break;
 362     case IOMMU_FLUSH:
 363     case IOMMU_FLUSH + 0x4:
 364         break;
 365     default:
 366         qemu_log_mask(LOG_UNIMP,
 367                   "apb iommu: Unimplemented register write "
 368                   "reg 0x%" HWADDR_PRIx " size 0x%x value 0x%" PRIx64 "\n",
 369                   addr, size, val);
 370         break;
 371     }
 372 }
 373
 374 static uint64_t iommu_config_read(void *opaque, hwaddr addr, unsigned size)
 375 {
 376     IOMMUState *is = opaque;
 377     uint64_t val;
 378
 379     switch (addr) {
 380     case IOMMU_CTRL:
 381         if (size == 4) {
 382             val = is->regs[IOMMU_CTRL >> 3] >> 32;
 383         } else {
 384             val = is->regs[IOMMU_CTRL >> 3];
 385         }
 386         break;
 387     case IOMMU_CTRL + 0x4:
 388         val = is->regs[IOMMU_CTRL >> 3] & 0xffffffffULL;
 389         break;
 390     case IOMMU_BASE:
 391         if (size == 4) {
 392             val = is->regs[IOMMU_BASE >> 3] >> 32;
 393         } else {
 394             val = is->regs[IOMMU_BASE >> 3];
 395         }
 396         break;
 397     case IOMMU_BASE + 0x4:
 398         val = is->regs[IOMMU_BASE >> 3] & 0xffffffffULL;
 399         break;
 400     case IOMMU_FLUSH:
 401     case IOMMU_FLUSH + 0x4:
 402         val = 0;
 403         break;
 404     default:
 405         qemu_log_mask(LOG_UNIMP,
 406                       "apb iommu: Unimplemented register read "
 407                       "reg 0x%" HWADDR_PRIx " size 0x%x\n",
 408                       addr, size);
 409         val = 0;
 410         break;
 411     }
 412
 413     IOMMU_DPRINTF("IOMMU config read: 0x%" HWADDR_PRIx " val: %" PRIx64
 414                   " size: %d\n", addr, val, size);
 415
 416     return val;
 417 }
 418
 419 static void apb_config_writel (void *opaque, hwaddr addr,
 420                                uint64_t val, unsigned size)
 421 {
 422     APBState *s = opaque;
 423     IOMMUState *is = &s->iommu;
 424
 425     APB_DPRINTF("%s: addr " TARGET_FMT_plx " val %" PRIx64 "\n", __func__, addr, val);
 426
 427     switch (addr & 0xffff) {
 428     case 0x30 ... 0x4f: /* DMA error registers */
 429         /* XXX: not implemented yet */
 430         break;
 431     case 0x200 ... 0x217: /* IOMMU */
 432         iommu_config_write(is, (addr & 0x1f), val, size);
 433         break;
 434     case 0xc00 ... 0xc3f: /* PCI interrupt control */
 435         if (addr & 4) {
 436             unsigned int ino = (addr & 0x3f) >> 3;
 437             s->pci_irq_map[ino] &= PBM_PCI_IMR_MASK;
 438             s->pci_irq_map[ino] |= val & ~PBM_PCI_IMR_MASK;
 439             if ((s->irq_request == ino) && !(val & ~PBM_PCI_IMR_MASK)) {
 440                 pbm_clear_request(s, ino);
 441             }
 442             pbm_check_irqs(s);
 443         }
 444         break;
 445     case 0x1000 ... 0x107f: /* OBIO interrupt control */
 446         if (addr & 4) {
 447             unsigned int ino = ((addr & 0xff) >> 3);
 448             s->obio_irq_map[ino] &= PBM_PCI_IMR_MASK;
 449             s->obio_irq_map[ino] |= val & ~PBM_PCI_IMR_MASK;
 450             if ((s->irq_request == (ino | 0x20))
 451                  && !(val & ~PBM_PCI_IMR_MASK)) {
 452                 pbm_clear_request(s, ino | 0x20);
 453             }
 454             pbm_check_irqs(s);
 455         }
 456         break;
 457     case 0x1400 ... 0x14ff: /* PCI interrupt clear */
 458         if (addr & 4) {
 459             unsigned int ino = (addr & 0xff) >> 5;
 460             if ((s->irq_request / 4)  == ino) {
 461                 pbm_clear_request(s, s->irq_request);
 462                 pbm_check_irqs(s);
 463             }
 464         }
 465         break;
 466     case 0x1800 ... 0x1860: /* OBIO interrupt clear */
 467         if (addr & 4) {
 468             unsigned int ino = ((addr & 0xff) >> 3) | 0x20;
 469             if (s->irq_request == ino) {
 470                 pbm_clear_request(s, ino);
 471                 pbm_check_irqs(s);
 472             }
 473         }
 474         break;
 475     case 0x2000 ... 0x202f: /* PCI control */
 476         s->pci_control[(addr & 0x3f) >> 2] = val;
 477         break;
 478     case 0xf020 ... 0xf027: /* Reset control */
 479         if (addr & 4) {
 480             val &= RESET_MASK;
 481             s->reset_control &= ~(val & RESET_WCMASK);
 482             s->reset_control |= val & RESET_WMASK;
 483             if (val & SOFT_POR) {
 484                 s->nr_resets = 0;
 485                 qemu_system_reset_request();
 486             } else if (val & SOFT_XIR) {
 487                 qemu_system_reset_request();
 488             }
 489         }
 490         break;
 491     case 0x5000 ... 0x51cf: /* PIO/DMA diagnostics */
 492     case 0xa400 ... 0xa67f: /* IOMMU diagnostics */
 493     case 0xa800 ... 0xa80f: /* Interrupt diagnostics */
 494     case 0xf000 ... 0xf01f: /* FFB config, memory control */
 495         /* we don't care */
 496     default:
 497         break;
 498     }
 499 }
 500
 501 static uint64_t apb_config_readl (void *opaque,
 502                                   hwaddr addr, unsigned size)
 503 {
 504     APBState *s = opaque;
 505     IOMMUState *is = &s->iommu;
 506     uint32_t val;
 507
 508     switch (addr & 0xffff) {
 509     case 0x30 ... 0x4f: /* DMA error registers */
 510         val = 0;
 511         /* XXX: not implemented yet */
 512         break;
 513     case 0x200 ... 0x217: /* IOMMU */
 514         val = iommu_config_read(is, (addr & 0x1f), size);
 515         break;
 516     case 0xc00 ... 0xc3f: /* PCI interrupt control */
 517         if (addr & 4) {
 518             val = s->pci_irq_map[(addr & 0x3f) >> 3];
 519         } else {
 520             val = 0;
 521         }
 522         break;
 523     case 0x1000 ... 0x107f: /* OBIO interrupt control */
 524         if (addr & 4) {
 525             val = s->obio_irq_map[(addr & 0xff) >> 3];
 526         } else {
 527             val = 0;
 528         }
 529         break;
 530     case 0x1080 ... 0x108f: /* PCI bus error */
 531         if (addr & 4) {
 532             val = s->pci_err_irq_map[(addr & 0xf) >> 3];
 533         } else {
 534             val = 0;
 535         }
 536         break;
 537     case 0x2000 ... 0x202f: /* PCI control */
 538         val = s->pci_control[(addr & 0x3f) >> 2];
 539         break;
 540     case 0xf020 ... 0xf027: /* Reset control */
 541         if (addr & 4) {
 542             val = s->reset_control;
 543         } else {
 544             val = 0;
 545         }
 546         break;
 547     case 0x5000 ... 0x51cf: /* PIO/DMA diagnostics */
 548     case 0xa400 ... 0xa67f: /* IOMMU diagnostics */
 549     case 0xa800 ... 0xa80f: /* Interrupt diagnostics */
 550     case 0xf000 ... 0xf01f: /* FFB config, memory control */
 551         /* we don't care */
 552     default:
 553         val = 0;
 554         break;
 555     }
 556     APB_DPRINTF("%s: addr " TARGET_FMT_plx " -> %x\n", __func__, addr, val);
 557
 558     return val;
 559 }
 560
 561 static const MemoryRegionOps apb_config_ops = {
 562     .read = apb_config_readl,
 563     .write = apb_config_writel,
 564     .endianness = DEVICE_NATIVE_ENDIAN,
 565 };
 566
 567 static void apb_pci_config_write(void *opaque, hwaddr addr,
 568                                  uint64_t val, unsigned size)
 569 {
 570     APBState *s = opaque;
 571     PCIHostState *phb = PCI_HOST_BRIDGE(s);
 572
 573     val = qemu_bswap_len(val, size);
 574     APB_DPRINTF("%s: addr " TARGET_FMT_plx " val %" PRIx64 "\n", __func__, addr, val);
 575     pci_data_write(phb->bus, addr, val, size);
 576 }
 577
 578 static uint64_t apb_pci_config_read(void *opaque, hwaddr addr,
 579                                     unsigned size)
 580 {
 581     uint32_t ret;
 582     APBState *s = opaque;
 583     PCIHostState *phb = PCI_HOST_BRIDGE(s);
 584
 585     ret = pci_data_read(phb->bus, addr, size);
 586     ret = qemu_bswap_len(ret, size);
 587     APB_DPRINTF("%s: addr " TARGET_FMT_plx " -> %x\n", __func__, addr, ret);
 588     return ret;
 589 }
 590
 591 /* The APB host has an IRQ line for each IRQ line of each slot.  */
 592 static int pci_apb_map_irq(PCIDevice *pci_dev, int irq_num)
 593 {
 594     return ((pci_dev->devfn & 0x18) >> 1) + irq_num;
 595 }
 596
 597 static int pci_pbm_map_irq(PCIDevice *pci_dev, int irq_num)
 598 {
 599     int bus_offset;
 600     if (pci_dev->devfn & 1)
 601         bus_offset = 16;
 602     else
 603         bus_offset = 0;
 604     return (bus_offset + (PCI_SLOT(pci_dev->devfn) << 2) + irq_num) & 0x1f;
 605 }
 606
 607 static void pci_apb_set_irq(void *opaque, int irq_num, int level)
 608 {
 609     APBState *s = opaque;
 610
 611     APB_DPRINTF("%s: set irq_in %d level %d\n", __func__, irq_num, level);
 612     /* PCI IRQ map onto the first 32 INO.  */
 613     if (irq_num < 32) {
 614         if (level) {
 615             s->pci_irq_in |= 1ULL << irq_num;
 616             if (s->pci_irq_map[irq_num >> 2] & PBM_PCI_IMR_ENABLED) {
 617                 pbm_set_request(s, irq_num);
 618             }
 619         } else {
 620             s->pci_irq_in &= ~(1ULL << irq_num);
 621         }
 622     } else {
 623         /* OBIO IRQ map onto the next 32 INO.  */
 624         if (level) {
 625             APB_DPRINTF("%s: set irq %d level %d\n", __func__, irq_num, level);
 626             s->pci_irq_in |= 1ULL << irq_num;
 627             if ((s->irq_request == NO_IRQ_REQUEST)
 628                 && (s->obio_irq_map[irq_num - 32] & PBM_PCI_IMR_ENABLED)) {
 629                 pbm_set_request(s, irq_num);
 630             }
 631         } else {
 632             s->pci_irq_in &= ~(1ULL << irq_num);
 633         }
 634     }
 635 }
 636
 637 static void apb_pci_bridge_realize(PCIDevice *dev, Error **errp)
 638 {
 639     pci_bridge_initfn(dev, TYPE_PCI_BUS);
 640
 641     /*
 642      * command register:
 643      * According to PCI bridge spec, after reset
 644      *   bus master bit is off
 645      *   memory space enable bit is off
 646      * According to manual (805-1251.pdf).
 647      *   the reset value should be zero unless the boot pin is tied high
 648      *   (which is true) and thus it should be PCI_COMMAND_MEMORY.
 649      */
 650     pci_set_word(dev->config + PCI_COMMAND,
 651                  PCI_COMMAND_MEMORY);
 652     pci_set_word(dev->config + PCI_STATUS,
 653                  PCI_STATUS_FAST_BACK | PCI_STATUS_66MHZ |
 654                  PCI_STATUS_DEVSEL_MEDIUM);
 655 }
 656
 657 PCIBus *pci_apb_init(hwaddr special_base,
 658                      hwaddr mem_base,
 659                      qemu_irq *ivec_irqs, PCIBus **bus2, PCIBus **bus3,
 660                      qemu_irq **pbm_irqs)
 661 {
 662     DeviceState *dev;
 663     SysBusDevice *s;
 664     PCIHostState *phb;
 665     APBState *d;
 666     IOMMUState *is;
 667     PCIDevice *pci_dev;
 668     PCIBridge *br;
 669
 670     /* Ultrasparc PBM main bus */
 671     dev = qdev_create(NULL, TYPE_APB);
 672     d = APB_DEVICE(dev);
 673     phb = PCI_HOST_BRIDGE(dev);
 674     phb->bus = pci_register_bus(DEVICE(phb), "pci",
 675                                 pci_apb_set_irq, pci_pbm_map_irq, d,
 676                                 &d->pci_mmio,
 677                                 get_system_io(),
 678                                 0, 32, TYPE_PCI_BUS);
 679     qdev_init_nofail(dev);
 680     s = SYS_BUS_DEVICE(dev);
 681     /* apb_config */
 682     sysbus_mmio_map(s, 0, special_base);
 683     /* PCI configuration space */
 684     sysbus_mmio_map(s, 1, special_base + 0x1000000ULL);
 685     /* pci_ioport */
 686     sysbus_mmio_map(s, 2, special_base + 0x2000000ULL);
 687
 688     memory_region_init(&d->pci_mmio, OBJECT(s), "pci-mmio", 0x100000000ULL);
 689     memory_region_add_subregion(get_system_memory(), mem_base, &d->pci_mmio);
 690
 691     *pbm_irqs = d->pbm_irqs;
 692     d->ivec_irqs = ivec_irqs;
 693
 694     pci_create_simple(phb->bus, 0, "pbm-pci");
 695
 696     /* APB IOMMU */
 697     is = &d->iommu;
 698     memset(is, 0, sizeof(IOMMUState));
 699
 700     memory_region_init_iommu(&is->iommu, OBJECT(dev), &pbm_iommu_ops,
 701                              "iommu-apb", UINT64_MAX);
 702     address_space_init(&is->iommu_as, &is->iommu, "pbm-as");
 703     pci_setup_iommu(phb->bus, pbm_pci_dma_iommu, is);
 704
 705     /* APB secondary busses */
 706     pci_dev = pci_create_multifunction(phb->bus, PCI_DEVFN(1, 0), true,
 707                                    "pbm-bridge");
 708     br = PCI_BRIDGE(pci_dev);
 709     pci_bridge_map_irq(br, "Advanced PCI Bus secondary bridge 1",
 710                        pci_apb_map_irq);
 711     qdev_init_nofail(&pci_dev->qdev);
 712     *bus2 = pci_bridge_get_sec_bus(br);
 713
 714     pci_dev = pci_create_multifunction(phb->bus, PCI_DEVFN(1, 1), true,
 715                                    "pbm-bridge");
 716     br = PCI_BRIDGE(pci_dev);
 717     pci_bridge_map_irq(br, "Advanced PCI Bus secondary bridge 2",
 718                        pci_apb_map_irq);
 719     qdev_init_nofail(&pci_dev->qdev);
 720     *bus3 = pci_bridge_get_sec_bus(br);
 721
 722     return phb->bus;
 723 }
 724
 725 static void pci_pbm_reset(DeviceState *d)
 726 {
 727     unsigned int i;
 728     APBState *s = APB_DEVICE(d);
 729
 730     for (i = 0; i < 8; i++) {
 731         s->pci_irq_map[i] &= PBM_PCI_IMR_MASK;
 732     }
 733     for (i = 0; i < 32; i++) {
 734         s->obio_irq_map[i] &= PBM_PCI_IMR_MASK;
 735     }
 736
 737     s->irq_request = NO_IRQ_REQUEST;
 738     s->pci_irq_in = 0ULL;
 739
 740     if (s->nr_resets++ == 0) {
 741         /* Power on reset */
 742         s->reset_control = POR;
 743     }
 744 }
 745
 746 static const MemoryRegionOps pci_config_ops = {
 747     .read = apb_pci_config_read,
 748     .write = apb_pci_config_write,
 749     .endianness = DEVICE_NATIVE_ENDIAN,
 750 };
 751
 752 static int pci_pbm_init_device(SysBusDevice *dev)
 753 {
 754     APBState *s;
 755     unsigned int i;
 756
 757     s = APB_DEVICE(dev);
 758     for (i = 0; i < 8; i++) {
 759         s->pci_irq_map[i] = (0x1f << 6) | (i << 2);
 760     }
 761     for (i = 0; i < 2; i++) {
 762         s->pci_err_irq_map[i] = (0x1f << 6) | 0x30;
 763     }
 764     for (i = 0; i < 32; i++) {
 765         s->obio_irq_map[i] = ((0x1f << 6) | 0x20) + i;
 766     }
 767     s->pbm_irqs = qemu_allocate_irqs(pci_apb_set_irq, s, MAX_IVEC);
 768     s->irq_request = NO_IRQ_REQUEST;
 769     s->pci_irq_in = 0ULL;
 770
 771     /* apb_config */
 772     memory_region_init_io(&s->apb_config, OBJECT(s), &apb_config_ops, s,
 773                           "apb-config", 0x10000);
 774     /* at region 0 */
 775     sysbus_init_mmio(dev, &s->apb_config);
 776
 777     memory_region_init_io(&s->pci_config, OBJECT(s), &pci_config_ops, s,
 778                           "apb-pci-config", 0x1000000);
 779     /* at region 1 */
 780     sysbus_init_mmio(dev, &s->pci_config);
 781
 782     /* pci_ioport */
 783     memory_region_init_alias(&s->pci_ioport, OBJECT(s), "apb-pci-ioport",
 784                              get_system_io(), 0, 0x10000);
 785     /* at region 2 */
 786     sysbus_init_mmio(dev, &s->pci_ioport);
 787
 788     return 0;
 789 }
 790
 791 static void pbm_pci_host_realize(PCIDevice *d, Error **errp)
 792 {
 793     pci_set_word(d->config + PCI_COMMAND,
 794                  PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
 795     pci_set_word(d->config + PCI_STATUS,
 796                  PCI_STATUS_FAST_BACK | PCI_STATUS_66MHZ |
 797                  PCI_STATUS_DEVSEL_MEDIUM);
 798 }
 799
 800 static void pbm_pci_host_class_init(ObjectClass *klass, void *data)
 801 {
 802     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 803     DeviceClass *dc = DEVICE_CLASS(klass);
 804
 805     k->realize = pbm_pci_host_realize;
 806     k->vendor_id = PCI_VENDOR_ID_SUN;
 807     k->device_id = PCI_DEVICE_ID_SUN_SABRE;
 808     k->class_id = PCI_CLASS_BRIDGE_HOST;
 809     /*
 810      * PCI-facing part of the host bridge, not usable without the
 811      * host-facing part, which can't be device_add'ed, yet.
 812      */
 813     dc->cannot_instantiate_with_device_add_yet = true;
 814 }
 815
 816 static const TypeInfo pbm_pci_host_info = {
 817     .name          = "pbm-pci",
 818     .parent        = TYPE_PCI_DEVICE,
 819     .instance_size = sizeof(PCIDevice),
 820     .class_init    = pbm_pci_host_class_init,
 821 };
 822
 823 static void pbm_host_class_init(ObjectClass *klass, void *data)
 824 {
 825     DeviceClass *dc = DEVICE_CLASS(klass);
 826     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 827
 828     k->init = pci_pbm_init_device;
 829     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 830     dc->reset = pci_pbm_reset;
 831 }
 832
 833 static const TypeInfo pbm_host_info = {
 834     .name          = TYPE_APB,
 835     .parent        = TYPE_PCI_HOST_BRIDGE,
 836     .instance_size = sizeof(APBState),
 837     .class_init    = pbm_host_class_init,
 838 };
 839
 840 static void pbm_pci_bridge_class_init(ObjectClass *klass, void *data)
 841 {
 842     DeviceClass *dc = DEVICE_CLASS(klass);
 843     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 844
 845     k->realize = apb_pci_bridge_realize;
 846     k->exit = pci_bridge_exitfn;
 847     k->vendor_id = PCI_VENDOR_ID_SUN;
 848     k->device_id = PCI_DEVICE_ID_SUN_SIMBA;
 849     k->revision = 0x11;
 850     k->config_write = pci_bridge_write_config;
 851     k->is_bridge = 1;
 852     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 853     dc->reset = pci_bridge_reset;
 854     dc->vmsd = &vmstate_pci_device;
 855 }
 856
 857 static const TypeInfo pbm_pci_bridge_info = {
 858     .name          = "pbm-bridge",
 859     .parent        = TYPE_PCI_BRIDGE,
 860     .class_init    = pbm_pci_bridge_class_init,
 861 };
 862
 863 static void pbm_register_types(void)
 864 {
 865     type_register_static(&pbm_host_info);
 866     type_register_static(&pbm_pci_host_info);
 867     type_register_static(&pbm_pci_bridge_info);
 868 }
 869
 870 type_init(pbm_register_types)