hw/pci-host/bonito.c

   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
 185 typedef struct BonitoState BonitoState;
 186
 187 typedef 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     MemoryRegion bonito_pciio;
 214     MemoryRegion bonito_localio;
 215
 216 } PCIBonitoState;
 217
 218 #define BONITO_PCI_HOST_BRIDGE(obj) \
 219     OBJECT_CHECK(BonitoState, (obj), TYPE_BONITO_PCI_HOST_BRIDGE)
 220
 221 struct BonitoState {
 222     PCIHostState parent_obj;
 223
 224     qemu_irq *pic;
 225
 226     PCIBonitoState *pci_dev;
 227 };
 228
 229 static void bonito_writel(void *opaque, hwaddr addr,
 230                           uint64_t val, unsigned size)
 231 {
 232     PCIBonitoState *s = opaque;
 233     uint32_t saddr;
 234     int reset = 0;
 235
 236     saddr = (addr - BONITO_REGBASE) >> 2;
 237
 238     DPRINTF("bonito_writel "TARGET_FMT_plx" val %x saddr %x\n", addr, val, saddr);
 239     switch (saddr) {
 240     case BONITO_BONPONCFG:
 241     case BONITO_IODEVCFG:
 242     case BONITO_SDCFG:
 243     case BONITO_PCIMAP:
 244     case BONITO_PCIMEMBASECFG:
 245     case BONITO_PCIMAP_CFG:
 246     case BONITO_GPIODATA:
 247     case BONITO_GPIOIE:
 248     case BONITO_INTEDGE:
 249     case BONITO_INTSTEER:
 250     case BONITO_INTPOL:
 251     case BONITO_PCIMAIL0:
 252     case BONITO_PCIMAIL1:
 253     case BONITO_PCIMAIL2:
 254     case BONITO_PCIMAIL3:
 255     case BONITO_PCICACHECTRL:
 256     case BONITO_PCICACHETAG:
 257     case BONITO_PCIBADADDR:
 258     case BONITO_PCIMSTAT:
 259     case BONITO_TIMECFG:
 260     case BONITO_CPUCFG:
 261     case BONITO_DQCFG:
 262     case BONITO_MEMSIZE:
 263         s->regs[saddr] = val;
 264         break;
 265     case BONITO_BONGENCFG:
 266         if (!(s->regs[saddr] & 0x04) && (val & 0x04)) {
 267             reset = 1; /* bit 2 jump from 0 to 1 cause reset */
 268         }
 269         s->regs[saddr] = val;
 270         if (reset) {
 271             qemu_system_reset_request();
 272         }
 273         break;
 274     case BONITO_INTENSET:
 275         s->regs[BONITO_INTENSET] = val;
 276         s->regs[BONITO_INTEN] |= val;
 277         break;
 278     case BONITO_INTENCLR:
 279         s->regs[BONITO_INTENCLR] = val;
 280         s->regs[BONITO_INTEN] &= ~val;
 281         break;
 282     case BONITO_INTEN:
 283     case BONITO_INTISR:
 284         DPRINTF("write to readonly bonito register %x\n", saddr);
 285         break;
 286     default:
 287         DPRINTF("write to unknown bonito register %x\n", saddr);
 288         break;
 289     }
 290 }
 291
 292 static uint64_t bonito_readl(void *opaque, hwaddr addr,
 293                              unsigned size)
 294 {
 295     PCIBonitoState *s = opaque;
 296     uint32_t saddr;
 297
 298     saddr = (addr - BONITO_REGBASE) >> 2;
 299
 300     DPRINTF("bonito_readl "TARGET_FMT_plx"\n", addr);
 301     switch (saddr) {
 302     case BONITO_INTISR:
 303         return s->regs[saddr];
 304     default:
 305         return s->regs[saddr];
 306     }
 307 }
 308
 309 static const MemoryRegionOps bonito_ops = {
 310     .read = bonito_readl,
 311     .write = bonito_writel,
 312     .endianness = DEVICE_NATIVE_ENDIAN,
 313     .valid = {
 314         .min_access_size = 4,
 315         .max_access_size = 4,
 316     },
 317 };
 318
 319 static void bonito_pciconf_writel(void *opaque, hwaddr addr,
 320                                   uint64_t val, unsigned size)
 321 {
 322     PCIBonitoState *s = opaque;
 323     PCIDevice *d = PCI_DEVICE(s);
 324
 325     DPRINTF("bonito_pciconf_writel "TARGET_FMT_plx" val %x\n", addr, val);
 326     d->config_write(d, addr, val, 4);
 327 }
 328
 329 static uint64_t bonito_pciconf_readl(void *opaque, hwaddr addr,
 330                                      unsigned size)
 331 {
 332
 333     PCIBonitoState *s = opaque;
 334     PCIDevice *d = PCI_DEVICE(s);
 335
 336     DPRINTF("bonito_pciconf_readl "TARGET_FMT_plx"\n", addr);
 337     return d->config_read(d, addr, 4);
 338 }
 339
 340 /* north bridge PCI configure space. 0x1fe0 0000 - 0x1fe0 00ff */
 341
 342 static const MemoryRegionOps bonito_pciconf_ops = {
 343     .read = bonito_pciconf_readl,
 344     .write = bonito_pciconf_writel,
 345     .endianness = DEVICE_NATIVE_ENDIAN,
 346     .valid = {
 347         .min_access_size = 4,
 348         .max_access_size = 4,
 349     },
 350 };
 351
 352 static uint64_t bonito_ldma_readl(void *opaque, hwaddr addr,
 353                                   unsigned size)
 354 {
 355     uint32_t val;
 356     PCIBonitoState *s = opaque;
 357
 358     val = ((uint32_t *)(&s->bonldma))[addr/sizeof(uint32_t)];
 359
 360     return val;
 361 }
 362
 363 static void bonito_ldma_writel(void *opaque, hwaddr addr,
 364                                uint64_t val, unsigned size)
 365 {
 366     PCIBonitoState *s = opaque;
 367
 368     ((uint32_t *)(&s->bonldma))[addr/sizeof(uint32_t)] = val & 0xffffffff;
 369 }
 370
 371 static const MemoryRegionOps bonito_ldma_ops = {
 372     .read = bonito_ldma_readl,
 373     .write = bonito_ldma_writel,
 374     .endianness = DEVICE_NATIVE_ENDIAN,
 375     .valid = {
 376         .min_access_size = 4,
 377         .max_access_size = 4,
 378     },
 379 };
 380
 381 static uint64_t bonito_cop_readl(void *opaque, hwaddr addr,
 382                                  unsigned size)
 383 {
 384     uint32_t val;
 385     PCIBonitoState *s = opaque;
 386
 387     val = ((uint32_t *)(&s->boncop))[addr/sizeof(uint32_t)];
 388
 389     return val;
 390 }
 391
 392 static void bonito_cop_writel(void *opaque, hwaddr addr,
 393                               uint64_t val, unsigned size)
 394 {
 395     PCIBonitoState *s = opaque;
 396
 397     ((uint32_t *)(&s->boncop))[addr/sizeof(uint32_t)] = val & 0xffffffff;
 398 }
 399
 400 static const MemoryRegionOps bonito_cop_ops = {
 401     .read = bonito_cop_readl,
 402     .write = bonito_cop_writel,
 403     .endianness = DEVICE_NATIVE_ENDIAN,
 404     .valid = {
 405         .min_access_size = 4,
 406         .max_access_size = 4,
 407     },
 408 };
 409
 410 static uint32_t bonito_sbridge_pciaddr(void *opaque, hwaddr addr)
 411 {
 412     PCIBonitoState *s = opaque;
 413     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 414     uint32_t cfgaddr;
 415     uint32_t idsel;
 416     uint32_t devno;
 417     uint32_t funno;
 418     uint32_t regno;
 419     uint32_t pciaddr;
 420
 421     /* support type0 pci config */
 422     if ((s->regs[BONITO_PCIMAP_CFG] & 0x10000) != 0x0) {
 423         return 0xffffffff;
 424     }
 425
 426     cfgaddr = addr & 0xffff;
 427     cfgaddr |= (s->regs[BONITO_PCIMAP_CFG] & 0xffff) << 16;
 428
 429     idsel = (cfgaddr & BONITO_PCICONF_IDSEL_MASK) >> BONITO_PCICONF_IDSEL_OFFSET;
 430     devno = ffs(idsel) - 1;
 431     funno = (cfgaddr & BONITO_PCICONF_FUN_MASK) >> BONITO_PCICONF_FUN_OFFSET;
 432     regno = (cfgaddr & BONITO_PCICONF_REG_MASK) >> BONITO_PCICONF_REG_OFFSET;
 433
 434     if (idsel == 0) {
 435         fprintf(stderr, "error in bonito pci config address " TARGET_FMT_plx
 436             ",pcimap_cfg=%x\n", addr, s->regs[BONITO_PCIMAP_CFG]);
 437         exit(1);
 438     }
 439     pciaddr = PCI_ADDR(pci_bus_num(phb->bus), devno, funno, regno);
 440     DPRINTF("cfgaddr %x pciaddr %x busno %x devno %d funno %d regno %d\n",
 441         cfgaddr, pciaddr, pci_bus_num(phb->bus), devno, funno, regno);
 442
 443     return pciaddr;
 444 }
 445
 446 static void bonito_spciconf_writeb(void *opaque, hwaddr addr,
 447                                    uint32_t val)
 448 {
 449     PCIBonitoState *s = opaque;
 450     PCIDevice *d = PCI_DEVICE(s);
 451     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 452     uint32_t pciaddr;
 453     uint16_t status;
 454
 455     DPRINTF("bonito_spciconf_writeb "TARGET_FMT_plx" val %x\n", addr, val);
 456     pciaddr = bonito_sbridge_pciaddr(s, addr);
 457
 458     if (pciaddr == 0xffffffff) {
 459         return;
 460     }
 461
 462     /* set the pci address in s->config_reg */
 463     phb->config_reg = (pciaddr) | (1u << 31);
 464     pci_data_write(phb->bus, phb->config_reg, val & 0xff, 1);
 465
 466     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 467     status = pci_get_word(d->config + PCI_STATUS);
 468     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 469     pci_set_word(d->config + PCI_STATUS, status);
 470 }
 471
 472 static void bonito_spciconf_writew(void *opaque, hwaddr addr,
 473                                    uint32_t val)
 474 {
 475     PCIBonitoState *s = opaque;
 476     PCIDevice *d = PCI_DEVICE(s);
 477     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 478     uint32_t pciaddr;
 479     uint16_t status;
 480
 481     DPRINTF("bonito_spciconf_writew "TARGET_FMT_plx" val %x\n", addr, val);
 482     assert((addr & 0x1) == 0);
 483
 484     pciaddr = bonito_sbridge_pciaddr(s, addr);
 485
 486     if (pciaddr == 0xffffffff) {
 487         return;
 488     }
 489
 490     /* set the pci address in s->config_reg */
 491     phb->config_reg = (pciaddr) | (1u << 31);
 492     pci_data_write(phb->bus, phb->config_reg, val, 2);
 493
 494     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 495     status = pci_get_word(d->config + PCI_STATUS);
 496     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 497     pci_set_word(d->config + PCI_STATUS, status);
 498 }
 499
 500 static void bonito_spciconf_writel(void *opaque, hwaddr addr,
 501                                    uint32_t val)
 502 {
 503     PCIBonitoState *s = opaque;
 504     PCIDevice *d = PCI_DEVICE(s);
 505     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 506     uint32_t pciaddr;
 507     uint16_t status;
 508
 509     DPRINTF("bonito_spciconf_writel "TARGET_FMT_plx" val %x\n", addr, val);
 510     assert((addr & 0x3) == 0);
 511
 512     pciaddr = bonito_sbridge_pciaddr(s, addr);
 513
 514     if (pciaddr == 0xffffffff) {
 515         return;
 516     }
 517
 518     /* set the pci address in s->config_reg */
 519     phb->config_reg = (pciaddr) | (1u << 31);
 520     pci_data_write(phb->bus, phb->config_reg, val, 4);
 521
 522     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 523     status = pci_get_word(d->config + PCI_STATUS);
 524     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 525     pci_set_word(d->config + PCI_STATUS, status);
 526 }
 527
 528 static uint32_t bonito_spciconf_readb(void *opaque, hwaddr addr)
 529 {
 530     PCIBonitoState *s = opaque;
 531     PCIDevice *d = PCI_DEVICE(s);
 532     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 533     uint32_t pciaddr;
 534     uint16_t status;
 535
 536     DPRINTF("bonito_spciconf_readb "TARGET_FMT_plx"\n", addr);
 537     pciaddr = bonito_sbridge_pciaddr(s, addr);
 538
 539     if (pciaddr == 0xffffffff) {
 540         return 0xff;
 541     }
 542
 543     /* set the pci address in s->config_reg */
 544     phb->config_reg = (pciaddr) | (1u << 31);
 545
 546     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 547     status = pci_get_word(d->config + PCI_STATUS);
 548     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 549     pci_set_word(d->config + PCI_STATUS, status);
 550
 551     return pci_data_read(phb->bus, phb->config_reg, 1);
 552 }
 553
 554 static uint32_t bonito_spciconf_readw(void *opaque, hwaddr addr)
 555 {
 556     PCIBonitoState *s = opaque;
 557     PCIDevice *d = PCI_DEVICE(s);
 558     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 559     uint32_t pciaddr;
 560     uint16_t status;
 561
 562     DPRINTF("bonito_spciconf_readw "TARGET_FMT_plx"\n", addr);
 563     assert((addr & 0x1) == 0);
 564
 565     pciaddr = bonito_sbridge_pciaddr(s, addr);
 566
 567     if (pciaddr == 0xffffffff) {
 568         return 0xffff;
 569     }
 570
 571     /* set the pci address in s->config_reg */
 572     phb->config_reg = (pciaddr) | (1u << 31);
 573
 574     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 575     status = pci_get_word(d->config + PCI_STATUS);
 576     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 577     pci_set_word(d->config + PCI_STATUS, status);
 578
 579     return pci_data_read(phb->bus, phb->config_reg, 2);
 580 }
 581
 582 static uint32_t bonito_spciconf_readl(void *opaque, hwaddr addr)
 583 {
 584     PCIBonitoState *s = opaque;
 585     PCIDevice *d = PCI_DEVICE(s);
 586     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 587     uint32_t pciaddr;
 588     uint16_t status;
 589
 590     DPRINTF("bonito_spciconf_readl "TARGET_FMT_plx"\n", addr);
 591     assert((addr & 0x3) == 0);
 592
 593     pciaddr = bonito_sbridge_pciaddr(s, addr);
 594
 595     if (pciaddr == 0xffffffff) {
 596         return 0xffffffff;
 597     }
 598
 599     /* set the pci address in s->config_reg */
 600     phb->config_reg = (pciaddr) | (1u << 31);
 601
 602     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 603     status = pci_get_word(d->config + PCI_STATUS);
 604     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 605     pci_set_word(d->config + PCI_STATUS, status);
 606
 607     return pci_data_read(phb->bus, phb->config_reg, 4);
 608 }
 609
 610 /* south bridge PCI configure space. 0x1fe8 0000 - 0x1fef ffff */
 611 static const MemoryRegionOps bonito_spciconf_ops = {
 612     .old_mmio = {
 613         .read = {
 614             bonito_spciconf_readb,
 615             bonito_spciconf_readw,
 616             bonito_spciconf_readl,
 617         },
 618         .write = {
 619             bonito_spciconf_writeb,
 620             bonito_spciconf_writew,
 621             bonito_spciconf_writel,
 622         },
 623     },
 624     .endianness = DEVICE_NATIVE_ENDIAN,
 625 };
 626
 627 #define BONITO_IRQ_BASE 32
 628
 629 static void pci_bonito_set_irq(void *opaque, int irq_num, int level)
 630 {
 631     BonitoState *s = opaque;
 632     qemu_irq *pic = s->pic;
 633     PCIBonitoState *bonito_state = s->pci_dev;
 634     int internal_irq = irq_num - BONITO_IRQ_BASE;
 635
 636     if (bonito_state->regs[BONITO_INTEDGE] & (1 << internal_irq)) {
 637         qemu_irq_pulse(*pic);
 638     } else {   /* level triggered */
 639         if (bonito_state->regs[BONITO_INTPOL] & (1 << internal_irq)) {
 640             qemu_irq_raise(*pic);
 641         } else {
 642             qemu_irq_lower(*pic);
 643         }
 644     }
 645 }
 646
 647 /* map the original irq (0~3) to bonito irq (16~47, but 16~31 are unused) */
 648 static int pci_bonito_map_irq(PCIDevice * pci_dev, int irq_num)
 649 {
 650     int slot;
 651
 652     slot = (pci_dev->devfn >> 3);
 653
 654     switch (slot) {
 655     case 5:   /* FULONG2E_VIA_SLOT, SouthBridge, IDE, USB, ACPI, AC97, MC97 */
 656         return irq_num % 4 + BONITO_IRQ_BASE;
 657     case 6:   /* FULONG2E_ATI_SLOT, VGA */
 658         return 4 + BONITO_IRQ_BASE;
 659     case 7:   /* FULONG2E_RTL_SLOT, RTL8139 */
 660         return 5 + BONITO_IRQ_BASE;
 661     case 8 ... 12: /* PCI slot 1 to 4 */
 662         return (slot - 8 + irq_num) + 6 + BONITO_IRQ_BASE;
 663     default:  /* Unknown device, don't do any translation */
 664         return irq_num;
 665     }
 666 }
 667
 668 static void bonito_reset(void *opaque)
 669 {
 670     PCIBonitoState *s = opaque;
 671
 672     /* set the default value of north bridge registers */
 673
 674     s->regs[BONITO_BONPONCFG] = 0xc40;
 675     s->regs[BONITO_BONGENCFG] = 0x1384;
 676     s->regs[BONITO_IODEVCFG] = 0x2bff8010;
 677     s->regs[BONITO_SDCFG] = 0x255e0091;
 678
 679     s->regs[BONITO_GPIODATA] = 0x1ff;
 680     s->regs[BONITO_GPIOIE] = 0x1ff;
 681     s->regs[BONITO_DQCFG] = 0x8;
 682     s->regs[BONITO_MEMSIZE] = 0x10000000;
 683     s->regs[BONITO_PCIMAP] = 0x6140;
 684 }
 685
 686 static const VMStateDescription vmstate_bonito = {
 687     .name = "Bonito",
 688     .version_id = 1,
 689     .minimum_version_id = 1,
 690     .fields = (VMStateField[]) {
 691         VMSTATE_PCI_DEVICE(dev, PCIBonitoState),
 692         VMSTATE_END_OF_LIST()
 693     }
 694 };
 695
 696 static int bonito_pcihost_initfn(SysBusDevice *dev)
 697 {
 698     PCIHostState *phb = PCI_HOST_BRIDGE(dev);
 699
 700     phb->bus = pci_register_bus(DEVICE(dev), "pci",
 701                                 pci_bonito_set_irq, pci_bonito_map_irq, dev,
 702                                 get_system_memory(), get_system_io(),
 703                                 0x28, 32, TYPE_PCI_BUS);
 704
 705     return 0;
 706 }
 707
 708 static void bonito_realize(PCIDevice *dev, Error **errp)
 709 {
 710     PCIBonitoState *s = DO_UPCAST(PCIBonitoState, dev, dev);
 711     SysBusDevice *sysbus = SYS_BUS_DEVICE(s->pcihost);
 712     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 713
 714     /* Bonito North Bridge, built on FPGA, VENDOR_ID/DEVICE_ID are "undefined" */
 715     pci_config_set_prog_interface(dev->config, 0x00);
 716
 717     /* set the north bridge register mapping */
 718     memory_region_init_io(&s->iomem, OBJECT(s), &bonito_ops, s,
 719                           "north-bridge-register", BONITO_INTERNAL_REG_SIZE);
 720     sysbus_init_mmio(sysbus, &s->iomem);
 721     sysbus_mmio_map(sysbus, 0, BONITO_INTERNAL_REG_BASE);
 722
 723     /* set the north bridge pci configure  mapping */
 724     memory_region_init_io(&phb->conf_mem, OBJECT(s), &bonito_pciconf_ops, s,
 725                           "north-bridge-pci-config", BONITO_PCICONFIG_SIZE);
 726     sysbus_init_mmio(sysbus, &phb->conf_mem);
 727     sysbus_mmio_map(sysbus, 1, BONITO_PCICONFIG_BASE);
 728
 729     /* set the south bridge pci configure  mapping */
 730     memory_region_init_io(&phb->data_mem, OBJECT(s), &bonito_spciconf_ops, s,
 731                           "south-bridge-pci-config", BONITO_SPCICONFIG_SIZE);
 732     sysbus_init_mmio(sysbus, &phb->data_mem);
 733     sysbus_mmio_map(sysbus, 2, BONITO_SPCICONFIG_BASE);
 734
 735     memory_region_init_io(&s->iomem_ldma, OBJECT(s), &bonito_ldma_ops, s,
 736                           "ldma", 0x100);
 737     sysbus_init_mmio(sysbus, &s->iomem_ldma);
 738     sysbus_mmio_map(sysbus, 3, 0xbfe00200);
 739
 740     memory_region_init_io(&s->iomem_cop, OBJECT(s), &bonito_cop_ops, s,
 741                           "cop", 0x100);
 742     sysbus_init_mmio(sysbus, &s->iomem_cop);
 743     sysbus_mmio_map(sysbus, 4, 0xbfe00300);
 744
 745     /* Map PCI IO Space  0x1fd0 0000 - 0x1fd1 0000 */
 746     memory_region_init_alias(&s->bonito_pciio, OBJECT(s), "isa_mmio",
 747                              get_system_io(), 0, BONITO_PCIIO_SIZE);
 748     sysbus_init_mmio(sysbus, &s->bonito_pciio);
 749     sysbus_mmio_map(sysbus, 5, BONITO_PCIIO_BASE);
 750
 751     /* add pci local io mapping */
 752     memory_region_init_alias(&s->bonito_localio, OBJECT(s), "isa_mmio",
 753                              get_system_io(), 0, BONITO_DEV_SIZE);
 754     sysbus_init_mmio(sysbus, &s->bonito_localio);
 755     sysbus_mmio_map(sysbus, 6, BONITO_DEV_BASE);
 756
 757     /* set the default value of north bridge pci config */
 758     pci_set_word(dev->config + PCI_COMMAND, 0x0000);
 759     pci_set_word(dev->config + PCI_STATUS, 0x0000);
 760     pci_set_word(dev->config + PCI_SUBSYSTEM_VENDOR_ID, 0x0000);
 761     pci_set_word(dev->config + PCI_SUBSYSTEM_ID, 0x0000);
 762
 763     pci_set_byte(dev->config + PCI_INTERRUPT_LINE, 0x00);
 764     pci_set_byte(dev->config + PCI_INTERRUPT_PIN, 0x01);
 765     pci_set_byte(dev->config + PCI_MIN_GNT, 0x3c);
 766     pci_set_byte(dev->config + PCI_MAX_LAT, 0x00);
 767
 768     qemu_register_reset(bonito_reset, s);
 769 }
 770
 771 PCIBus *bonito_init(qemu_irq *pic)
 772 {
 773     DeviceState *dev;
 774     BonitoState *pcihost;
 775     PCIHostState *phb;
 776     PCIBonitoState *s;
 777     PCIDevice *d;
 778
 779     dev = qdev_create(NULL, TYPE_BONITO_PCI_HOST_BRIDGE);
 780     phb = PCI_HOST_BRIDGE(dev);
 781     pcihost = BONITO_PCI_HOST_BRIDGE(dev);
 782     pcihost->pic = pic;
 783     qdev_init_nofail(dev);
 784
 785     /* set the pcihost pointer before bonito_initfn is called */
 786     d = pci_create(phb->bus, PCI_DEVFN(0, 0), "Bonito");
 787     s = DO_UPCAST(PCIBonitoState, dev, d);
 788     s->pcihost = pcihost;
 789     pcihost->pci_dev = s;
 790     qdev_init_nofail(DEVICE(d));
 791
 792     return phb->bus;
 793 }
 794
 795 static void bonito_class_init(ObjectClass *klass, void *data)
 796 {
 797     DeviceClass *dc = DEVICE_CLASS(klass);
 798     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 799
 800     k->realize = bonito_realize;
 801     k->vendor_id = 0xdf53;
 802     k->device_id = 0x00d5;
 803     k->revision = 0x01;
 804     k->class_id = PCI_CLASS_BRIDGE_HOST;
 805     dc->desc = "Host bridge";
 806     dc->vmsd = &vmstate_bonito;
 807     /*
 808      * PCI-facing part of the host bridge, not usable without the
 809      * host-facing part, which can't be device_add'ed, yet.
 810      */
 811     dc->cannot_instantiate_with_device_add_yet = true;
 812 }
 813
 814 static const TypeInfo bonito_info = {
 815     .name          = "Bonito",
 816     .parent        = TYPE_PCI_DEVICE,
 817     .instance_size = sizeof(PCIBonitoState),
 818     .class_init    = bonito_class_init,
 819 };
 820
 821 static void bonito_pcihost_class_init(ObjectClass *klass, void *data)
 822 {
 823     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 824
 825     k->init = bonito_pcihost_initfn;
 826 }
 827
 828 static const TypeInfo bonito_pcihost_info = {
 829     .name          = TYPE_BONITO_PCI_HOST_BRIDGE,
 830     .parent        = TYPE_PCI_HOST_BRIDGE,
 831     .instance_size = sizeof(BonitoState),
 832     .class_init    = bonito_pcihost_class_init,
 833 };
 834
 835 static void bonito_register_types(void)
 836 {
 837     type_register_static(&bonito_pcihost_info);
 838     type_register_static(&bonito_info);
 839 }
 840
 841 type_init(bonito_register_types)