qemu/hw/pci-host/bonito.c
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   1/*
   2 * bonito north bridge support
   3 *
   4 * Copyright (c) 2008 yajin (yajin@vm-kernel.org)
   5 * Copyright (c) 2010 Huacai Chen (zltjiangshi@gmail.com)
   6 *
   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/*
  14 * fulong 2e mini pc has a bonito north bridge.
  15 */
  16
  17/* what is the meaning of devfn in qemu and IDSEL in bonito northbridge?
  18 *
  19 * devfn   pci_slot<<3  + funno
  20 * one pci bus can have 32 devices and each device can have 8 functions.
  21 *
  22 * In bonito north bridge, pci slot = IDSEL bit - 12.
  23 * For example, PCI_IDSEL_VIA686B = 17,
  24 * pci slot = 17-12=5
  25 *
  26 * so
  27 * VT686B_FUN0's devfn = (5<<3)+0
  28 * VT686B_FUN1's devfn = (5<<3)+1
  29 *
  30 * qemu also uses pci address for north bridge to access pci config register.
  31 * bus_no   [23:16]
  32 * dev_no   [15:11]
  33 * fun_no   [10:8]
  34 * reg_no   [7:2]
  35 *
  36 * so function bonito_sbridge_pciaddr for the translation from
  37 * north bridge address to pci address.
  38 */
  39
  40#include <assert.h>
  41
  42#include "hw/hw.h"
  43#include "hw/pci/pci.h"
  44#include "hw/i386/pc.h"
  45#include "hw/mips/mips.h"
  46#include "hw/pci/pci_host.h"
  47#include "sysemu/sysemu.h"
  48#include "exec/address-spaces.h"
  49
  50//#define DEBUG_BONITO
  51
  52#ifdef DEBUG_BONITO
  53#define DPRINTF(fmt, ...) fprintf(stderr, "%s: " fmt, __FUNCTION__, ##__VA_ARGS__)
  54#else
  55#define DPRINTF(fmt, ...)
  56#endif
  57
  58/* from linux soure code. include/asm-mips/mips-boards/bonito64.h*/
  59#define BONITO_BOOT_BASE        0x1fc00000
  60#define BONITO_BOOT_SIZE        0x00100000
  61#define BONITO_BOOT_TOP         (BONITO_BOOT_BASE+BONITO_BOOT_SIZE-1)
  62#define BONITO_FLASH_BASE       0x1c000000
  63#define BONITO_FLASH_SIZE       0x03000000
  64#define BONITO_FLASH_TOP        (BONITO_FLASH_BASE+BONITO_FLASH_SIZE-1)
  65#define BONITO_SOCKET_BASE      0x1f800000
  66#define BONITO_SOCKET_SIZE      0x00400000
  67#define BONITO_SOCKET_TOP       (BONITO_SOCKET_BASE+BONITO_SOCKET_SIZE-1)
  68#define BONITO_REG_BASE         0x1fe00000
  69#define BONITO_REG_SIZE         0x00040000
  70#define BONITO_REG_TOP          (BONITO_REG_BASE+BONITO_REG_SIZE-1)
  71#define BONITO_DEV_BASE         0x1ff00000
  72#define BONITO_DEV_SIZE         0x00100000
  73#define BONITO_DEV_TOP          (BONITO_DEV_BASE+BONITO_DEV_SIZE-1)
  74#define BONITO_PCILO_BASE       0x10000000
  75#define BONITO_PCILO_BASE_VA    0xb0000000
  76#define BONITO_PCILO_SIZE       0x0c000000
  77#define BONITO_PCILO_TOP        (BONITO_PCILO_BASE+BONITO_PCILO_SIZE-1)
  78#define BONITO_PCILO0_BASE      0x10000000
  79#define BONITO_PCILO1_BASE      0x14000000
  80#define BONITO_PCILO2_BASE      0x18000000
  81#define BONITO_PCIHI_BASE       0x20000000
  82#define BONITO_PCIHI_SIZE       0x20000000
  83#define BONITO_PCIHI_TOP        (BONITO_PCIHI_BASE+BONITO_PCIHI_SIZE-1)
  84#define BONITO_PCIIO_BASE       0x1fd00000
  85#define BONITO_PCIIO_BASE_VA    0xbfd00000
  86#define BONITO_PCIIO_SIZE       0x00010000
  87#define BONITO_PCIIO_TOP        (BONITO_PCIIO_BASE+BONITO_PCIIO_SIZE-1)
  88#define BONITO_PCICFG_BASE      0x1fe80000
  89#define BONITO_PCICFG_SIZE      0x00080000
  90#define BONITO_PCICFG_TOP       (BONITO_PCICFG_BASE+BONITO_PCICFG_SIZE-1)
  91
  92
  93#define BONITO_PCICONFIGBASE    0x00
  94#define BONITO_REGBASE          0x100
  95
  96#define BONITO_PCICONFIG_BASE   (BONITO_PCICONFIGBASE+BONITO_REG_BASE)
  97#define BONITO_PCICONFIG_SIZE   (0x100)
  98
  99#define BONITO_INTERNAL_REG_BASE  (BONITO_REGBASE+BONITO_REG_BASE)
 100#define BONITO_INTERNAL_REG_SIZE  (0x70)
 101
 102#define BONITO_SPCICONFIG_BASE  (BONITO_PCICFG_BASE)
 103#define BONITO_SPCICONFIG_SIZE  (BONITO_PCICFG_SIZE)
 104
 105
 106
 107/* 1. Bonito h/w Configuration */
 108/* Power on register */
 109
 110#define BONITO_BONPONCFG        (0x00 >> 2)      /* 0x100 */
 111#define BONITO_BONGENCFG_OFFSET 0x4
 112#define BONITO_BONGENCFG        (BONITO_BONGENCFG_OFFSET>>2)   /*0x104 */
 113
 114/* 2. IO & IDE configuration */
 115#define BONITO_IODEVCFG         (0x08 >> 2)      /* 0x108 */
 116
 117/* 3. IO & IDE configuration */
 118#define BONITO_SDCFG            (0x0c >> 2)      /* 0x10c */
 119
 120/* 4. PCI address map control */
 121#define BONITO_PCIMAP           (0x10 >> 2)      /* 0x110 */
 122#define BONITO_PCIMEMBASECFG    (0x14 >> 2)      /* 0x114 */
 123#define BONITO_PCIMAP_CFG       (0x18 >> 2)      /* 0x118 */
 124
 125/* 5. ICU & GPIO regs */
 126/* GPIO Regs - r/w */
 127#define BONITO_GPIODATA_OFFSET  0x1c
 128#define BONITO_GPIODATA         (BONITO_GPIODATA_OFFSET >> 2)   /* 0x11c */
 129#define BONITO_GPIOIE           (0x20 >> 2)      /* 0x120 */
 130
 131/* ICU Configuration Regs - r/w */
 132#define BONITO_INTEDGE          (0x24 >> 2)      /* 0x124 */
 133#define BONITO_INTSTEER         (0x28 >> 2)      /* 0x128 */
 134#define BONITO_INTPOL           (0x2c >> 2)      /* 0x12c */
 135
 136/* ICU Enable Regs - IntEn & IntISR are r/o. */
 137#define BONITO_INTENSET         (0x30 >> 2)      /* 0x130 */
 138#define BONITO_INTENCLR         (0x34 >> 2)      /* 0x134 */
 139#define BONITO_INTEN            (0x38 >> 2)      /* 0x138 */
 140#define BONITO_INTISR           (0x3c >> 2)      /* 0x13c */
 141
 142/* PCI mail boxes */
 143#define BONITO_PCIMAIL0_OFFSET    0x40
 144#define BONITO_PCIMAIL1_OFFSET    0x44
 145#define BONITO_PCIMAIL2_OFFSET    0x48
 146#define BONITO_PCIMAIL3_OFFSET    0x4c
 147#define BONITO_PCIMAIL0         (0x40 >> 2)      /* 0x140 */
 148#define BONITO_PCIMAIL1         (0x44 >> 2)      /* 0x144 */
 149#define BONITO_PCIMAIL2         (0x48 >> 2)      /* 0x148 */
 150#define BONITO_PCIMAIL3         (0x4c >> 2)      /* 0x14c */
 151
 152/* 6. PCI cache */
 153#define BONITO_PCICACHECTRL     (0x50 >> 2)      /* 0x150 */
 154#define BONITO_PCICACHETAG      (0x54 >> 2)      /* 0x154 */
 155#define BONITO_PCIBADADDR       (0x58 >> 2)      /* 0x158 */
 156#define BONITO_PCIMSTAT         (0x5c >> 2)      /* 0x15c */
 157
 158/* 7. other*/
 159#define BONITO_TIMECFG          (0x60 >> 2)      /* 0x160 */
 160#define BONITO_CPUCFG           (0x64 >> 2)      /* 0x164 */
 161#define BONITO_DQCFG            (0x68 >> 2)      /* 0x168 */
 162#define BONITO_MEMSIZE          (0x6C >> 2)      /* 0x16c */
 163
 164#define BONITO_REGS             (0x70 >> 2)
 165
 166/* PCI config for south bridge. type 0 */
 167#define BONITO_PCICONF_IDSEL_MASK      0xfffff800     /* [31:11] */
 168#define BONITO_PCICONF_IDSEL_OFFSET    11
 169#define BONITO_PCICONF_FUN_MASK        0x700    /* [10:8] */
 170#define BONITO_PCICONF_FUN_OFFSET      8
 171#define BONITO_PCICONF_REG_MASK        0xFC
 172#define BONITO_PCICONF_REG_OFFSET      0
 173
 174
 175/* idsel BIT = pci slot number +12 */
 176#define PCI_SLOT_BASE              12
 177#define PCI_IDSEL_VIA686B_BIT      (17)
 178#define PCI_IDSEL_VIA686B          (1<<PCI_IDSEL_VIA686B_BIT)
 179
 180#define PCI_ADDR(busno,devno,funno,regno)  \
 181    ((((busno)<<16)&0xff0000) + (((devno)<<11)&0xf800) + (((funno)<<8)&0x700) + (regno))
 182
 183#define TYPE_BONITO_PCI_HOST_BRIDGE "Bonito-pcihost"
 184
 185typedef struct BonitoState BonitoState;
 186
 187typedef struct PCIBonitoState
 188{
 189    PCIDevice dev;
 190
 191    BonitoState *pcihost;
 192    uint32_t regs[BONITO_REGS];
 193
 194    struct bonldma {
 195        uint32_t ldmactrl;
 196        uint32_t ldmastat;
 197        uint32_t ldmaaddr;
 198        uint32_t ldmago;
 199    } bonldma;
 200
 201    /* Based at 1fe00300, bonito Copier */
 202    struct boncop {
 203        uint32_t copctrl;
 204        uint32_t copstat;
 205        uint32_t coppaddr;
 206        uint32_t copgo;
 207    } boncop;
 208
 209    /* Bonito registers */
 210    MemoryRegion iomem;
 211    MemoryRegion iomem_ldma;
 212    MemoryRegion iomem_cop;
 213
 214    hwaddr bonito_pciio_start;
 215    hwaddr bonito_pciio_length;
 216    int bonito_pciio_handle;
 217
 218    hwaddr bonito_localio_start;
 219    hwaddr bonito_localio_length;
 220    int bonito_localio_handle;
 221
 222} PCIBonitoState;
 223
 224#define BONITO_PCI_HOST_BRIDGE(obj) \
 225    OBJECT_CHECK(BonitoState, (obj), TYPE_BONITO_PCI_HOST_BRIDGE)
 226
 227struct BonitoState {
 228    PCIHostState parent_obj;
 229
 230    qemu_irq *pic;
 231
 232    PCIBonitoState *pci_dev;
 233};
 234
 235static void bonito_writel(void *opaque, hwaddr addr,
 236                          uint64_t val, unsigned size)
 237{
 238    PCIBonitoState *s = opaque;
 239    uint32_t saddr;
 240    int reset = 0;
 241
 242    saddr = (addr - BONITO_REGBASE) >> 2;
 243
 244    DPRINTF("bonito_writel "TARGET_FMT_plx" val %x saddr %x\n", addr, val, saddr);
 245    switch (saddr) {
 246    case BONITO_BONPONCFG:
 247    case BONITO_IODEVCFG:
 248    case BONITO_SDCFG:
 249    case BONITO_PCIMAP:
 250    case BONITO_PCIMEMBASECFG:
 251    case BONITO_PCIMAP_CFG:
 252    case BONITO_GPIODATA:
 253    case BONITO_GPIOIE:
 254    case BONITO_INTEDGE:
 255    case BONITO_INTSTEER:
 256    case BONITO_INTPOL:
 257    case BONITO_PCIMAIL0:
 258    case BONITO_PCIMAIL1:
 259    case BONITO_PCIMAIL2:
 260    case BONITO_PCIMAIL3:
 261    case BONITO_PCICACHECTRL:
 262    case BONITO_PCICACHETAG:
 263    case BONITO_PCIBADADDR:
 264    case BONITO_PCIMSTAT:
 265    case BONITO_TIMECFG:
 266    case BONITO_CPUCFG:
 267    case BONITO_DQCFG:
 268    case BONITO_MEMSIZE:
 269        s->regs[saddr] = val;
 270        break;
 271    case BONITO_BONGENCFG:
 272        if (!(s->regs[saddr] & 0x04) && (val & 0x04)) {
 273            reset = 1; /* bit 2 jump from 0 to 1 cause reset */
 274        }
 275        s->regs[saddr] = val;
 276        if (reset) {
 277            qemu_system_reset_request();
 278        }
 279        break;
 280    case BONITO_INTENSET:
 281        s->regs[BONITO_INTENSET] = val;
 282        s->regs[BONITO_INTEN] |= val;
 283        break;
 284    case BONITO_INTENCLR:
 285        s->regs[BONITO_INTENCLR] = val;
 286        s->regs[BONITO_INTEN] &= ~val;
 287        break;
 288    case BONITO_INTEN:
 289    case BONITO_INTISR:
 290        DPRINTF("write to readonly bonito register %x\n", saddr);
 291        break;
 292    default:
 293        DPRINTF("write to unknown bonito register %x\n", saddr);
 294        break;
 295    }
 296}
 297
 298static uint64_t bonito_readl(void *opaque, hwaddr addr,
 299                             unsigned size)
 300{
 301    PCIBonitoState *s = opaque;
 302    uint32_t saddr;
 303
 304    saddr = (addr - BONITO_REGBASE) >> 2;
 305
 306    DPRINTF("bonito_readl "TARGET_FMT_plx"\n", addr);
 307    switch (saddr) {
 308    case BONITO_INTISR:
 309        return s->regs[saddr];
 310    default:
 311        return s->regs[saddr];
 312    }
 313}
 314
 315static const MemoryRegionOps bonito_ops = {
 316    .read = bonito_readl,
 317    .write = bonito_writel,
 318    .endianness = DEVICE_NATIVE_ENDIAN,
 319    .valid = {
 320        .min_access_size = 4,
 321        .max_access_size = 4,
 322    },
 323};
 324
 325static void bonito_pciconf_writel(void *opaque, hwaddr addr,
 326                                  uint64_t val, unsigned size)
 327{
 328    PCIBonitoState *s = opaque;
 329    PCIDevice *d = PCI_DEVICE(s);
 330
 331    DPRINTF("bonito_pciconf_writel "TARGET_FMT_plx" val %x\n", addr, val);
 332    d->config_write(d, addr, val, 4);
 333}
 334
 335static uint64_t bonito_pciconf_readl(void *opaque, hwaddr addr,
 336                                     unsigned size)
 337{
 338
 339    PCIBonitoState *s = opaque;
 340    PCIDevice *d = PCI_DEVICE(s);
 341
 342    DPRINTF("bonito_pciconf_readl "TARGET_FMT_plx"\n", addr);
 343    return d->config_read(d, addr, 4);
 344}
 345
 346/* north bridge PCI configure space. 0x1fe0 0000 - 0x1fe0 00ff */
 347
 348static const MemoryRegionOps bonito_pciconf_ops = {
 349    .read = bonito_pciconf_readl,
 350    .write = bonito_pciconf_writel,
 351    .endianness = DEVICE_NATIVE_ENDIAN,
 352    .valid = {
 353        .min_access_size = 4,
 354        .max_access_size = 4,
 355    },
 356};
 357
 358static uint64_t bonito_ldma_readl(void *opaque, hwaddr addr,
 359                                  unsigned size)
 360{
 361    uint32_t val;
 362    PCIBonitoState *s = opaque;
 363
 364    val = ((uint32_t *)(&s->bonldma))[addr/sizeof(uint32_t)];
 365
 366    return val;
 367}
 368
 369static void bonito_ldma_writel(void *opaque, hwaddr addr,
 370                               uint64_t val, unsigned size)
 371{
 372    PCIBonitoState *s = opaque;
 373
 374    ((uint32_t *)(&s->bonldma))[addr/sizeof(uint32_t)] = val & 0xffffffff;
 375}
 376
 377static const MemoryRegionOps bonito_ldma_ops = {
 378    .read = bonito_ldma_readl,
 379    .write = bonito_ldma_writel,
 380    .endianness = DEVICE_NATIVE_ENDIAN,
 381    .valid = {
 382        .min_access_size = 4,
 383        .max_access_size = 4,
 384    },
 385};
 386
 387static uint64_t bonito_cop_readl(void *opaque, hwaddr addr,
 388                                 unsigned size)
 389{
 390    uint32_t val;
 391    PCIBonitoState *s = opaque;
 392
 393    val = ((uint32_t *)(&s->boncop))[addr/sizeof(uint32_t)];
 394
 395    return val;
 396}
 397
 398static void bonito_cop_writel(void *opaque, hwaddr addr,
 399                              uint64_t val, unsigned size)
 400{
 401    PCIBonitoState *s = opaque;
 402
 403    ((uint32_t *)(&s->boncop))[addr/sizeof(uint32_t)] = val & 0xffffffff;
 404}
 405
 406static const MemoryRegionOps bonito_cop_ops = {
 407    .read = bonito_cop_readl,
 408    .write = bonito_cop_writel,
 409    .endianness = DEVICE_NATIVE_ENDIAN,
 410    .valid = {
 411        .min_access_size = 4,
 412        .max_access_size = 4,
 413    },
 414};
 415
 416static uint32_t bonito_sbridge_pciaddr(void *opaque, hwaddr addr)
 417{
 418    PCIBonitoState *s = opaque;
 419    PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 420    uint32_t cfgaddr;
 421    uint32_t idsel;
 422    uint32_t devno;
 423    uint32_t funno;
 424    uint32_t regno;
 425    uint32_t pciaddr;
 426
 427    /* support type0 pci config */
 428    if ((s->regs[BONITO_PCIMAP_CFG] & 0x10000) != 0x0) {
 429        return 0xffffffff;
 430    }
 431
 432    cfgaddr = addr & 0xffff;
 433    cfgaddr |= (s->regs[BONITO_PCIMAP_CFG] & 0xffff) << 16;
 434
 435    idsel = (cfgaddr & BONITO_PCICONF_IDSEL_MASK) >> BONITO_PCICONF_IDSEL_OFFSET;
 436    devno = ffs(idsel) - 1;
 437    funno = (cfgaddr & BONITO_PCICONF_FUN_MASK) >> BONITO_PCICONF_FUN_OFFSET;
 438    regno = (cfgaddr & BONITO_PCICONF_REG_MASK) >> BONITO_PCICONF_REG_OFFSET;
 439
 440    if (idsel == 0) {
 441        fprintf(stderr, "error in bonito pci config address " TARGET_FMT_plx
 442            ",pcimap_cfg=%x\n", addr, s->regs[BONITO_PCIMAP_CFG]);
 443        exit(1);
 444    }
 445    pciaddr = PCI_ADDR(pci_bus_num(phb->bus), devno, funno, regno);
 446    DPRINTF("cfgaddr %x pciaddr %x busno %x devno %d funno %d regno %d\n",
 447        cfgaddr, pciaddr, pci_bus_num(phb->bus), devno, funno, regno);
 448
 449    return pciaddr;
 450}
 451
 452static void bonito_spciconf_writeb(void *opaque, hwaddr addr,
 453                                   uint32_t val)
 454{
 455    PCIBonitoState *s = opaque;
 456    PCIDevice *d = PCI_DEVICE(s);
 457    PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 458    uint32_t pciaddr;
 459    uint16_t status;
 460
 461    DPRINTF("bonito_spciconf_writeb "TARGET_FMT_plx" val %x\n", addr, val);
 462    pciaddr = bonito_sbridge_pciaddr(s, addr);
 463
 464    if (pciaddr == 0xffffffff) {
 465        return;
 466    }
 467
 468    /* set the pci address in s->config_reg */
 469    phb->config_reg = (pciaddr) | (1u << 31);
 470    pci_data_write(phb->bus, phb->config_reg, val & 0xff, 1);
 471
 472    /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 473    status = pci_get_word(d->config + PCI_STATUS);
 474    status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 475    pci_set_word(d->config + PCI_STATUS, status);
 476}
 477
 478static void bonito_spciconf_writew(void *opaque, hwaddr addr,
 479                                   uint32_t val)
 480{
 481    PCIBonitoState *s = opaque;
 482    PCIDevice *d = PCI_DEVICE(s);
 483    PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 484    uint32_t pciaddr;
 485    uint16_t status;
 486
 487    DPRINTF("bonito_spciconf_writew "TARGET_FMT_plx" val %x\n", addr, val);
 488    assert((addr & 0x1) == 0);
 489
 490    pciaddr = bonito_sbridge_pciaddr(s, addr);
 491
 492    if (pciaddr == 0xffffffff) {
 493        return;
 494    }
 495
 496    /* set the pci address in s->config_reg */
 497    phb->config_reg = (pciaddr) | (1u << 31);
 498    pci_data_write(phb->bus, phb->config_reg, val, 2);
 499
 500    /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 501    status = pci_get_word(d->config + PCI_STATUS);
 502    status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 503    pci_set_word(d->config + PCI_STATUS, status);
 504}
 505
 506static void bonito_spciconf_writel(void *opaque, hwaddr addr,
 507                                   uint32_t val)
 508{
 509    PCIBonitoState *s = opaque;
 510    PCIDevice *d = PCI_DEVICE(s);
 511    PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 512    uint32_t pciaddr;
 513    uint16_t status;
 514
 515    DPRINTF("bonito_spciconf_writel "TARGET_FMT_plx" val %x\n", addr, val);
 516    assert((addr & 0x3) == 0);
 517
 518    pciaddr = bonito_sbridge_pciaddr(s, addr);
 519
 520    if (pciaddr == 0xffffffff) {
 521        return;
 522    }
 523
 524    /* set the pci address in s->config_reg */
 525    phb->config_reg = (pciaddr) | (1u << 31);
 526    pci_data_write(phb->bus, phb->config_reg, val, 4);
 527
 528    /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 529    status = pci_get_word(d->config + PCI_STATUS);
 530    status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 531    pci_set_word(d->config + PCI_STATUS, status);
 532}
 533
 534static uint32_t bonito_spciconf_readb(void *opaque, hwaddr addr)
 535{
 536    PCIBonitoState *s = opaque;
 537    PCIDevice *d = PCI_DEVICE(s);
 538    PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 539    uint32_t pciaddr;
 540    uint16_t status;
 541
 542    DPRINTF("bonito_spciconf_readb "TARGET_FMT_plx"\n", addr);
 543    pciaddr = bonito_sbridge_pciaddr(s, addr);
 544
 545    if (pciaddr == 0xffffffff) {
 546        return 0xff;
 547    }
 548
 549    /* set the pci address in s->config_reg */
 550    phb->config_reg = (pciaddr) | (1u << 31);
 551
 552    /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 553    status = pci_get_word(d->config + PCI_STATUS);
 554    status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 555    pci_set_word(d->config + PCI_STATUS, status);
 556
 557    return pci_data_read(phb->bus, phb->config_reg, 1);
 558}
 559
 560static uint32_t bonito_spciconf_readw(void *opaque, hwaddr addr)
 561{
 562    PCIBonitoState *s = opaque;
 563    PCIDevice *d = PCI_DEVICE(s);
 564    PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 565    uint32_t pciaddr;
 566    uint16_t status;
 567
 568    DPRINTF("bonito_spciconf_readw "TARGET_FMT_plx"\n", addr);
 569    assert((addr & 0x1) == 0);
 570
 571    pciaddr = bonito_sbridge_pciaddr(s, addr);
 572
 573    if (pciaddr == 0xffffffff) {
 574        return 0xffff;
 575    }
 576
 577    /* set the pci address in s->config_reg */
 578    phb->config_reg = (pciaddr) | (1u << 31);
 579
 580    /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 581    status = pci_get_word(d->config + PCI_STATUS);
 582    status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 583    pci_set_word(d->config + PCI_STATUS, status);
 584
 585    return pci_data_read(phb->bus, phb->config_reg, 2);
 586}
 587
 588static uint32_t bonito_spciconf_readl(void *opaque, hwaddr addr)
 589{
 590    PCIBonitoState *s = opaque;
 591    PCIDevice *d = PCI_DEVICE(s);
 592    PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 593    uint32_t pciaddr;
 594    uint16_t status;
 595
 596    DPRINTF("bonito_spciconf_readl "TARGET_FMT_plx"\n", addr);
 597    assert((addr & 0x3) == 0);
 598
 599    pciaddr = bonito_sbridge_pciaddr(s, addr);
 600
 601    if (pciaddr == 0xffffffff) {
 602        return 0xffffffff;
 603    }
 604
 605    /* set the pci address in s->config_reg */
 606    phb->config_reg = (pciaddr) | (1u << 31);
 607
 608    /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 609    status = pci_get_word(d->config + PCI_STATUS);
 610    status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 611    pci_set_word(d->config + PCI_STATUS, status);
 612
 613    return pci_data_read(phb->bus, phb->config_reg, 4);
 614}
 615
 616/* south bridge PCI configure space. 0x1fe8 0000 - 0x1fef ffff */
 617static const MemoryRegionOps bonito_spciconf_ops = {
 618    .old_mmio = {
 619        .read = {
 620            bonito_spciconf_readb,
 621            bonito_spciconf_readw,
 622            bonito_spciconf_readl,
 623        },
 624        .write = {
 625            bonito_spciconf_writeb,
 626            bonito_spciconf_writew,
 627            bonito_spciconf_writel,
 628        },
 629    },
 630    .endianness = DEVICE_NATIVE_ENDIAN,
 631};
 632
 633#define BONITO_IRQ_BASE 32
 634
 635static void pci_bonito_set_irq(void *opaque, int irq_num, int level)
 636{
 637    BonitoState *s = opaque;
 638    qemu_irq *pic = s->pic;
 639    PCIBonitoState *bonito_state = s->pci_dev;
 640    int internal_irq = irq_num - BONITO_IRQ_BASE;
 641
 642    if (bonito_state->regs[BONITO_INTEDGE] & (1 << internal_irq)) {
 643        qemu_irq_pulse(*pic);
 644    } else {   /* level triggered */
 645        if (bonito_state->regs[BONITO_INTPOL] & (1 << internal_irq)) {
 646            qemu_irq_raise(*pic);
 647        } else {
 648            qemu_irq_lower(*pic);
 649        }
 650    }
 651}
 652
 653/* map the original irq (0~3) to bonito irq (16~47, but 16~31 are unused) */
 654static int pci_bonito_map_irq(PCIDevice * pci_dev, int irq_num)
 655{
 656    int slot;
 657
 658    slot = (pci_dev->devfn >> 3);
 659
 660    switch (slot) {
 661    case 5:   /* FULONG2E_VIA_SLOT, SouthBridge, IDE, USB, ACPI, AC97, MC97 */
 662        return irq_num % 4 + BONITO_IRQ_BASE;
 663    case 6:   /* FULONG2E_ATI_SLOT, VGA */
 664        return 4 + BONITO_IRQ_BASE;
 665    case 7:   /* FULONG2E_RTL_SLOT, RTL8139 */
 666        return 5 + BONITO_IRQ_BASE;
 667    case 8 ... 12: /* PCI slot 1 to 4 */
 668        return (slot - 8 + irq_num) + 6 + BONITO_IRQ_BASE;
 669    default:  /* Unknown device, don't do any translation */
 670        return irq_num;
 671    }
 672}
 673
 674static void bonito_reset(void *opaque)
 675{
 676    PCIBonitoState *s = opaque;
 677
 678    /* set the default value of north bridge registers */
 679
 680    s->regs[BONITO_BONPONCFG] = 0xc40;
 681    s->regs[BONITO_BONGENCFG] = 0x1384;
 682    s->regs[BONITO_IODEVCFG] = 0x2bff8010;
 683    s->regs[BONITO_SDCFG] = 0x255e0091;
 684
 685    s->regs[BONITO_GPIODATA] = 0x1ff;
 686    s->regs[BONITO_GPIOIE] = 0x1ff;
 687    s->regs[BONITO_DQCFG] = 0x8;
 688    s->regs[BONITO_MEMSIZE] = 0x10000000;
 689    s->regs[BONITO_PCIMAP] = 0x6140;
 690}
 691
 692static const VMStateDescription vmstate_bonito = {
 693    .name = "Bonito",
 694    .version_id = 1,
 695    .minimum_version_id = 1,
 696    .minimum_version_id_old = 1,
 697    .fields      = (VMStateField []) {
 698        VMSTATE_PCI_DEVICE(dev, PCIBonitoState),
 699        VMSTATE_END_OF_LIST()
 700    }
 701};
 702
 703static int bonito_pcihost_initfn(SysBusDevice *dev)
 704{
 705    PCIHostState *phb = PCI_HOST_BRIDGE(dev);
 706
 707    phb->bus = pci_register_bus(DEVICE(dev), "pci",
 708                                pci_bonito_set_irq, pci_bonito_map_irq, dev,
 709                                get_system_memory(), get_system_io(),
 710                                0x28, 32, TYPE_PCI_BUS);
 711
 712    return 0;
 713}
 714
 715static int bonito_initfn(PCIDevice *dev)
 716{
 717    PCIBonitoState *s = DO_UPCAST(PCIBonitoState, dev, dev);
 718    SysBusDevice *sysbus = SYS_BUS_DEVICE(s->pcihost);
 719    PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 720
 721    /* Bonito North Bridge, built on FPGA, VENDOR_ID/DEVICE_ID are "undefined" */
 722    pci_config_set_prog_interface(dev->config, 0x00);
 723
 724    /* set the north bridge register mapping */
 725    memory_region_init_io(&s->iomem, &bonito_ops, s,
 726                          "north-bridge-register", BONITO_INTERNAL_REG_SIZE);
 727    sysbus_init_mmio(sysbus, &s->iomem);
 728    sysbus_mmio_map(sysbus, 0, BONITO_INTERNAL_REG_BASE);
 729
 730    /* set the north bridge pci configure  mapping */
 731    memory_region_init_io(&phb->conf_mem, &bonito_pciconf_ops, s,
 732                          "north-bridge-pci-config", BONITO_PCICONFIG_SIZE);
 733    sysbus_init_mmio(sysbus, &phb->conf_mem);
 734    sysbus_mmio_map(sysbus, 1, BONITO_PCICONFIG_BASE);
 735
 736    /* set the south bridge pci configure  mapping */
 737    memory_region_init_io(&phb->data_mem, &bonito_spciconf_ops, s,
 738                          "south-bridge-pci-config", BONITO_SPCICONFIG_SIZE);
 739    sysbus_init_mmio(sysbus, &phb->data_mem);
 740    sysbus_mmio_map(sysbus, 2, BONITO_SPCICONFIG_BASE);
 741
 742    memory_region_init_io(&s->iomem_ldma, &bonito_ldma_ops, s,
 743                          "ldma", 0x100);
 744    sysbus_init_mmio(sysbus, &s->iomem_ldma);
 745    sysbus_mmio_map(sysbus, 3, 0xbfe00200);
 746
 747    memory_region_init_io(&s->iomem_cop, &bonito_cop_ops, s,
 748                          "cop", 0x100);
 749    sysbus_init_mmio(sysbus, &s->iomem_cop);
 750    sysbus_mmio_map(sysbus, 4, 0xbfe00300);
 751
 752    /* Map PCI IO Space  0x1fd0 0000 - 0x1fd1 0000 */
 753    s->bonito_pciio_start = BONITO_PCIIO_BASE;
 754    s->bonito_pciio_length = BONITO_PCIIO_SIZE;
 755    isa_mem_base = s->bonito_pciio_start;
 756    isa_mmio_init(s->bonito_pciio_start, s->bonito_pciio_length);
 757
 758    /* add pci local io mapping */
 759    s->bonito_localio_start = BONITO_DEV_BASE;
 760    s->bonito_localio_length = BONITO_DEV_SIZE;
 761    isa_mmio_init(s->bonito_localio_start, s->bonito_localio_length);
 762
 763    /* set the default value of north bridge pci config */
 764    pci_set_word(dev->config + PCI_COMMAND, 0x0000);
 765    pci_set_word(dev->config + PCI_STATUS, 0x0000);
 766    pci_set_word(dev->config + PCI_SUBSYSTEM_VENDOR_ID, 0x0000);
 767    pci_set_word(dev->config + PCI_SUBSYSTEM_ID, 0x0000);
 768
 769    pci_set_byte(dev->config + PCI_INTERRUPT_LINE, 0x00);
 770    pci_set_byte(dev->config + PCI_INTERRUPT_PIN, 0x01);
 771    pci_set_byte(dev->config + PCI_MIN_GNT, 0x3c);
 772    pci_set_byte(dev->config + PCI_MAX_LAT, 0x00);
 773
 774    qemu_register_reset(bonito_reset, s);
 775
 776    return 0;
 777}
 778
 779PCIBus *bonito_init(qemu_irq *pic)
 780{
 781    DeviceState *dev;
 782    BonitoState *pcihost;
 783    PCIHostState *phb;
 784    PCIBonitoState *s;
 785    PCIDevice *d;
 786
 787    dev = qdev_create(NULL, TYPE_BONITO_PCI_HOST_BRIDGE);
 788    phb = PCI_HOST_BRIDGE(dev);
 789    pcihost = BONITO_PCI_HOST_BRIDGE(dev);
 790    pcihost->pic = pic;
 791    qdev_init_nofail(dev);
 792
 793    /* set the pcihost pointer before bonito_initfn is called */
 794    d = pci_create(phb->bus, PCI_DEVFN(0, 0), "Bonito");
 795    s = DO_UPCAST(PCIBonitoState, dev, d);
 796    s->pcihost = pcihost;
 797    pcihost->pci_dev = s;
 798    qdev_init_nofail(DEVICE(d));
 799
 800    return phb->bus;
 801}
 802
 803static void bonito_class_init(ObjectClass *klass, void *data)
 804{
 805    DeviceClass *dc = DEVICE_CLASS(klass);
 806    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 807
 808    k->init = bonito_initfn;
 809    k->vendor_id = 0xdf53;
 810    k->device_id = 0x00d5;
 811    k->revision = 0x01;
 812    k->class_id = PCI_CLASS_BRIDGE_HOST;
 813    dc->desc = "Host bridge";
 814    dc->no_user = 1;
 815    dc->vmsd = &vmstate_bonito;
 816}
 817
 818static const TypeInfo bonito_info = {
 819    .name          = "Bonito",
 820    .parent        = TYPE_PCI_DEVICE,
 821    .instance_size = sizeof(PCIBonitoState),
 822    .class_init    = bonito_class_init,
 823};
 824
 825static void bonito_pcihost_class_init(ObjectClass *klass, void *data)
 826{
 827    DeviceClass *dc = DEVICE_CLASS(klass);
 828    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 829
 830    k->init = bonito_pcihost_initfn;
 831    dc->no_user = 1;
 832}
 833
 834static const TypeInfo bonito_pcihost_info = {
 835    .name          = TYPE_BONITO_PCI_HOST_BRIDGE,
 836    .parent        = TYPE_PCI_HOST_BRIDGE,
 837    .instance_size = sizeof(BonitoState),
 838    .class_init    = bonito_pcihost_class_init,
 839};
 840
 841static void bonito_register_types(void)
 842{
 843    type_register_static(&bonito_pcihost_info);
 844    type_register_static(&bonito_info);
 845}
 846
 847type_init(bonito_register_types)
 848