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 typedef struct BonitoState BonitoState;
 184
 185 typedef struct PCIBonitoState
 186 {
 187     PCIDevice dev;
 188
 189     BonitoState *pcihost;
 190     uint32_t regs[BONITO_REGS];
 191
 192     struct bonldma {
 193         uint32_t ldmactrl;
 194         uint32_t ldmastat;
 195         uint32_t ldmaaddr;
 196         uint32_t ldmago;
 197     } bonldma;
 198
 199     /* Based at 1fe00300, bonito Copier */
 200     struct boncop {
 201         uint32_t copctrl;
 202         uint32_t copstat;
 203         uint32_t coppaddr;
 204         uint32_t copgo;
 205     } boncop;
 206
 207     /* Bonito registers */
 208     MemoryRegion iomem;
 209     MemoryRegion iomem_ldma;
 210     MemoryRegion iomem_cop;
 211     MemoryRegion bonito_pciio;
 212     MemoryRegion bonito_localio;
 213
 214 } PCIBonitoState;
 215
 216 struct BonitoState {
 217     PCIHostState parent_obj;
 218     qemu_irq *pic;
 219     PCIBonitoState *pci_dev;
 220 };
 221
 222 #define TYPE_BONITO_PCI_HOST_BRIDGE "Bonito-pcihost"
 223 #define BONITO_PCI_HOST_BRIDGE(obj) \
 224     OBJECT_CHECK(BonitoState, (obj), TYPE_BONITO_PCI_HOST_BRIDGE)
 225
 226 #define TYPE_PCI_BONITO "Bonito"
 227 #define PCI_BONITO(obj) \
 228     OBJECT_CHECK(PCIBonitoState, (obj), TYPE_PCI_BONITO)
 229
 230 static void bonito_writel(void *opaque, hwaddr addr,
 231                           uint64_t val, unsigned size)
 232 {
 233     PCIBonitoState *s = opaque;
 234     uint32_t saddr;
 235     int reset = 0;
 236
 237     saddr = addr >> 2;
 238
 239     DPRINTF("bonito_writel "TARGET_FMT_plx" val %x saddr %x\n", addr, val, saddr);
 240     switch (saddr) {
 241     case BONITO_BONPONCFG:
 242     case BONITO_IODEVCFG:
 243     case BONITO_SDCFG:
 244     case BONITO_PCIMAP:
 245     case BONITO_PCIMEMBASECFG:
 246     case BONITO_PCIMAP_CFG:
 247     case BONITO_GPIODATA:
 248     case BONITO_GPIOIE:
 249     case BONITO_INTEDGE:
 250     case BONITO_INTSTEER:
 251     case BONITO_INTPOL:
 252     case BONITO_PCIMAIL0:
 253     case BONITO_PCIMAIL1:
 254     case BONITO_PCIMAIL2:
 255     case BONITO_PCIMAIL3:
 256     case BONITO_PCICACHECTRL:
 257     case BONITO_PCICACHETAG:
 258     case BONITO_PCIBADADDR:
 259     case BONITO_PCIMSTAT:
 260     case BONITO_TIMECFG:
 261     case BONITO_CPUCFG:
 262     case BONITO_DQCFG:
 263     case BONITO_MEMSIZE:
 264         s->regs[saddr] = val;
 265         break;
 266     case BONITO_BONGENCFG:
 267         if (!(s->regs[saddr] & 0x04) && (val & 0x04)) {
 268             reset = 1; /* bit 2 jump from 0 to 1 cause reset */
 269         }
 270         s->regs[saddr] = val;
 271         if (reset) {
 272             qemu_system_reset_request();
 273         }
 274         break;
 275     case BONITO_INTENSET:
 276         s->regs[BONITO_INTENSET] = val;
 277         s->regs[BONITO_INTEN] |= val;
 278         break;
 279     case BONITO_INTENCLR:
 280         s->regs[BONITO_INTENCLR] = val;
 281         s->regs[BONITO_INTEN] &= ~val;
 282         break;
 283     case BONITO_INTEN:
 284     case BONITO_INTISR:
 285         DPRINTF("write to readonly bonito register %x\n", saddr);
 286         break;
 287     default:
 288         DPRINTF("write to unknown bonito register %x\n", saddr);
 289         break;
 290     }
 291 }
 292
 293 static uint64_t bonito_readl(void *opaque, hwaddr addr,
 294                              unsigned size)
 295 {
 296     PCIBonitoState *s = opaque;
 297     uint32_t saddr;
 298
 299     saddr = addr >> 2;
 300
 301     DPRINTF("bonito_readl "TARGET_FMT_plx"\n", addr);
 302     switch (saddr) {
 303     case BONITO_INTISR:
 304         return s->regs[saddr];
 305     default:
 306         return s->regs[saddr];
 307     }
 308 }
 309
 310 static const MemoryRegionOps bonito_ops = {
 311     .read = bonito_readl,
 312     .write = bonito_writel,
 313     .endianness = DEVICE_NATIVE_ENDIAN,
 314     .valid = {
 315         .min_access_size = 4,
 316         .max_access_size = 4,
 317     },
 318 };
 319
 320 static void bonito_pciconf_writel(void *opaque, hwaddr addr,
 321                                   uint64_t val, unsigned size)
 322 {
 323     PCIBonitoState *s = opaque;
 324     PCIDevice *d = PCI_DEVICE(s);
 325
 326     DPRINTF("bonito_pciconf_writel "TARGET_FMT_plx" val %x\n", addr, val);
 327     d->config_write(d, addr, val, 4);
 328 }
 329
 330 static uint64_t bonito_pciconf_readl(void *opaque, hwaddr addr,
 331                                      unsigned size)
 332 {
 333
 334     PCIBonitoState *s = opaque;
 335     PCIDevice *d = PCI_DEVICE(s);
 336
 337     DPRINTF("bonito_pciconf_readl "TARGET_FMT_plx"\n", addr);
 338     return d->config_read(d, addr, 4);
 339 }
 340
 341 /* north bridge PCI configure space. 0x1fe0 0000 - 0x1fe0 00ff */
 342
 343 static const MemoryRegionOps bonito_pciconf_ops = {
 344     .read = bonito_pciconf_readl,
 345     .write = bonito_pciconf_writel,
 346     .endianness = DEVICE_NATIVE_ENDIAN,
 347     .valid = {
 348         .min_access_size = 4,
 349         .max_access_size = 4,
 350     },
 351 };
 352
 353 static uint64_t bonito_ldma_readl(void *opaque, hwaddr addr,
 354                                   unsigned size)
 355 {
 356     uint32_t val;
 357     PCIBonitoState *s = opaque;
 358
 359     if (addr >= sizeof(s->bonldma)) {
 360         return 0;
 361     }
 362
 363     val = ((uint32_t *)(&s->bonldma))[addr/sizeof(uint32_t)];
 364
 365     return val;
 366 }
 367
 368 static void bonito_ldma_writel(void *opaque, hwaddr addr,
 369                                uint64_t val, unsigned size)
 370 {
 371     PCIBonitoState *s = opaque;
 372
 373     if (addr >= sizeof(s->bonldma)) {
 374         return;
 375     }
 376
 377     ((uint32_t *)(&s->bonldma))[addr/sizeof(uint32_t)] = val & 0xffffffff;
 378 }
 379
 380 static const MemoryRegionOps bonito_ldma_ops = {
 381     .read = bonito_ldma_readl,
 382     .write = bonito_ldma_writel,
 383     .endianness = DEVICE_NATIVE_ENDIAN,
 384     .valid = {
 385         .min_access_size = 4,
 386         .max_access_size = 4,
 387     },
 388 };
 389
 390 static uint64_t bonito_cop_readl(void *opaque, hwaddr addr,
 391                                  unsigned size)
 392 {
 393     uint32_t val;
 394     PCIBonitoState *s = opaque;
 395
 396     if (addr >= sizeof(s->boncop)) {
 397         return 0;
 398     }
 399
 400     val = ((uint32_t *)(&s->boncop))[addr/sizeof(uint32_t)];
 401
 402     return val;
 403 }
 404
 405 static void bonito_cop_writel(void *opaque, hwaddr addr,
 406                               uint64_t val, unsigned size)
 407 {
 408     PCIBonitoState *s = opaque;
 409
 410     if (addr >= sizeof(s->boncop)) {
 411         return;
 412     }
 413
 414     ((uint32_t *)(&s->boncop))[addr/sizeof(uint32_t)] = val & 0xffffffff;
 415 }
 416
 417 static const MemoryRegionOps bonito_cop_ops = {
 418     .read = bonito_cop_readl,
 419     .write = bonito_cop_writel,
 420     .endianness = DEVICE_NATIVE_ENDIAN,
 421     .valid = {
 422         .min_access_size = 4,
 423         .max_access_size = 4,
 424     },
 425 };
 426
 427 static uint32_t bonito_sbridge_pciaddr(void *opaque, hwaddr addr)
 428 {
 429     PCIBonitoState *s = opaque;
 430     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 431     uint32_t cfgaddr;
 432     uint32_t idsel;
 433     uint32_t devno;
 434     uint32_t funno;
 435     uint32_t regno;
 436     uint32_t pciaddr;
 437
 438     /* support type0 pci config */
 439     if ((s->regs[BONITO_PCIMAP_CFG] & 0x10000) != 0x0) {
 440         return 0xffffffff;
 441     }
 442
 443     cfgaddr = addr & 0xffff;
 444     cfgaddr |= (s->regs[BONITO_PCIMAP_CFG] & 0xffff) << 16;
 445
 446     idsel = (cfgaddr & BONITO_PCICONF_IDSEL_MASK) >> BONITO_PCICONF_IDSEL_OFFSET;
 447     devno = ctz32(idsel);
 448     funno = (cfgaddr & BONITO_PCICONF_FUN_MASK) >> BONITO_PCICONF_FUN_OFFSET;
 449     regno = (cfgaddr & BONITO_PCICONF_REG_MASK) >> BONITO_PCICONF_REG_OFFSET;
 450
 451     if (idsel == 0) {
 452         fprintf(stderr, "error in bonito pci config address " TARGET_FMT_plx
 453             ",pcimap_cfg=%x\n", addr, s->regs[BONITO_PCIMAP_CFG]);
 454         exit(1);
 455     }
 456     pciaddr = PCI_ADDR(pci_bus_num(phb->bus), devno, funno, regno);
 457     DPRINTF("cfgaddr %x pciaddr %x busno %x devno %d funno %d regno %d\n",
 458         cfgaddr, pciaddr, pci_bus_num(phb->bus), devno, funno, regno);
 459
 460     return pciaddr;
 461 }
 462
 463 static void bonito_spciconf_writeb(void *opaque, hwaddr addr,
 464                                    uint32_t val)
 465 {
 466     PCIBonitoState *s = opaque;
 467     PCIDevice *d = PCI_DEVICE(s);
 468     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 469     uint32_t pciaddr;
 470     uint16_t status;
 471
 472     DPRINTF("bonito_spciconf_writeb "TARGET_FMT_plx" val %x\n", addr, val);
 473     pciaddr = bonito_sbridge_pciaddr(s, addr);
 474
 475     if (pciaddr == 0xffffffff) {
 476         return;
 477     }
 478
 479     /* set the pci address in s->config_reg */
 480     phb->config_reg = (pciaddr) | (1u << 31);
 481     pci_data_write(phb->bus, phb->config_reg, val & 0xff, 1);
 482
 483     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 484     status = pci_get_word(d->config + PCI_STATUS);
 485     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 486     pci_set_word(d->config + PCI_STATUS, status);
 487 }
 488
 489 static void bonito_spciconf_writew(void *opaque, hwaddr addr,
 490                                    uint32_t val)
 491 {
 492     PCIBonitoState *s = opaque;
 493     PCIDevice *d = PCI_DEVICE(s);
 494     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 495     uint32_t pciaddr;
 496     uint16_t status;
 497
 498     DPRINTF("bonito_spciconf_writew "TARGET_FMT_plx" val %x\n", addr, val);
 499     assert((addr & 0x1) == 0);
 500
 501     pciaddr = bonito_sbridge_pciaddr(s, addr);
 502
 503     if (pciaddr == 0xffffffff) {
 504         return;
 505     }
 506
 507     /* set the pci address in s->config_reg */
 508     phb->config_reg = (pciaddr) | (1u << 31);
 509     pci_data_write(phb->bus, phb->config_reg, val, 2);
 510
 511     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 512     status = pci_get_word(d->config + PCI_STATUS);
 513     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 514     pci_set_word(d->config + PCI_STATUS, status);
 515 }
 516
 517 static void bonito_spciconf_writel(void *opaque, hwaddr addr,
 518                                    uint32_t val)
 519 {
 520     PCIBonitoState *s = opaque;
 521     PCIDevice *d = PCI_DEVICE(s);
 522     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 523     uint32_t pciaddr;
 524     uint16_t status;
 525
 526     DPRINTF("bonito_spciconf_writel "TARGET_FMT_plx" val %x\n", addr, val);
 527     assert((addr & 0x3) == 0);
 528
 529     pciaddr = bonito_sbridge_pciaddr(s, addr);
 530
 531     if (pciaddr == 0xffffffff) {
 532         return;
 533     }
 534
 535     /* set the pci address in s->config_reg */
 536     phb->config_reg = (pciaddr) | (1u << 31);
 537     pci_data_write(phb->bus, phb->config_reg, val, 4);
 538
 539     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 540     status = pci_get_word(d->config + PCI_STATUS);
 541     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 542     pci_set_word(d->config + PCI_STATUS, status);
 543 }
 544
 545 static uint32_t bonito_spciconf_readb(void *opaque, hwaddr addr)
 546 {
 547     PCIBonitoState *s = opaque;
 548     PCIDevice *d = PCI_DEVICE(s);
 549     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 550     uint32_t pciaddr;
 551     uint16_t status;
 552
 553     DPRINTF("bonito_spciconf_readb "TARGET_FMT_plx"\n", addr);
 554     pciaddr = bonito_sbridge_pciaddr(s, addr);
 555
 556     if (pciaddr == 0xffffffff) {
 557         return 0xff;
 558     }
 559
 560     /* set the pci address in s->config_reg */
 561     phb->config_reg = (pciaddr) | (1u << 31);
 562
 563     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 564     status = pci_get_word(d->config + PCI_STATUS);
 565     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 566     pci_set_word(d->config + PCI_STATUS, status);
 567
 568     return pci_data_read(phb->bus, phb->config_reg, 1);
 569 }
 570
 571 static uint32_t bonito_spciconf_readw(void *opaque, hwaddr addr)
 572 {
 573     PCIBonitoState *s = opaque;
 574     PCIDevice *d = PCI_DEVICE(s);
 575     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 576     uint32_t pciaddr;
 577     uint16_t status;
 578
 579     DPRINTF("bonito_spciconf_readw "TARGET_FMT_plx"\n", addr);
 580     assert((addr & 0x1) == 0);
 581
 582     pciaddr = bonito_sbridge_pciaddr(s, addr);
 583
 584     if (pciaddr == 0xffffffff) {
 585         return 0xffff;
 586     }
 587
 588     /* set the pci address in s->config_reg */
 589     phb->config_reg = (pciaddr) | (1u << 31);
 590
 591     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 592     status = pci_get_word(d->config + PCI_STATUS);
 593     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 594     pci_set_word(d->config + PCI_STATUS, status);
 595
 596     return pci_data_read(phb->bus, phb->config_reg, 2);
 597 }
 598
 599 static uint32_t bonito_spciconf_readl(void *opaque, hwaddr addr)
 600 {
 601     PCIBonitoState *s = opaque;
 602     PCIDevice *d = PCI_DEVICE(s);
 603     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 604     uint32_t pciaddr;
 605     uint16_t status;
 606
 607     DPRINTF("bonito_spciconf_readl "TARGET_FMT_plx"\n", addr);
 608     assert((addr & 0x3) == 0);
 609
 610     pciaddr = bonito_sbridge_pciaddr(s, addr);
 611
 612     if (pciaddr == 0xffffffff) {
 613         return 0xffffffff;
 614     }
 615
 616     /* set the pci address in s->config_reg */
 617     phb->config_reg = (pciaddr) | (1u << 31);
 618
 619     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 620     status = pci_get_word(d->config + PCI_STATUS);
 621     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 622     pci_set_word(d->config + PCI_STATUS, status);
 623
 624     return pci_data_read(phb->bus, phb->config_reg, 4);
 625 }
 626
 627 /* south bridge PCI configure space. 0x1fe8 0000 - 0x1fef ffff */
 628 static const MemoryRegionOps bonito_spciconf_ops = {
 629     .old_mmio = {
 630         .read = {
 631             bonito_spciconf_readb,
 632             bonito_spciconf_readw,
 633             bonito_spciconf_readl,
 634         },
 635         .write = {
 636             bonito_spciconf_writeb,
 637             bonito_spciconf_writew,
 638             bonito_spciconf_writel,
 639         },
 640     },
 641     .endianness = DEVICE_NATIVE_ENDIAN,
 642 };
 643
 644 #define BONITO_IRQ_BASE 32
 645
 646 static void pci_bonito_set_irq(void *opaque, int irq_num, int level)
 647 {
 648     BonitoState *s = opaque;
 649     qemu_irq *pic = s->pic;
 650     PCIBonitoState *bonito_state = s->pci_dev;
 651     int internal_irq = irq_num - BONITO_IRQ_BASE;
 652
 653     if (bonito_state->regs[BONITO_INTEDGE] & (1 << internal_irq)) {
 654         qemu_irq_pulse(*pic);
 655     } else {   /* level triggered */
 656         if (bonito_state->regs[BONITO_INTPOL] & (1 << internal_irq)) {
 657             qemu_irq_raise(*pic);
 658         } else {
 659             qemu_irq_lower(*pic);
 660         }
 661     }
 662 }
 663
 664 /* map the original irq (0~3) to bonito irq (16~47, but 16~31 are unused) */
 665 static int pci_bonito_map_irq(PCIDevice * pci_dev, int irq_num)
 666 {
 667     int slot;
 668
 669     slot = (pci_dev->devfn >> 3);
 670
 671     switch (slot) {
 672     case 5:   /* FULONG2E_VIA_SLOT, SouthBridge, IDE, USB, ACPI, AC97, MC97 */
 673         return irq_num % 4 + BONITO_IRQ_BASE;
 674     case 6:   /* FULONG2E_ATI_SLOT, VGA */
 675         return 4 + BONITO_IRQ_BASE;
 676     case 7:   /* FULONG2E_RTL_SLOT, RTL8139 */
 677         return 5 + BONITO_IRQ_BASE;
 678     case 8 ... 12: /* PCI slot 1 to 4 */
 679         return (slot - 8 + irq_num) + 6 + BONITO_IRQ_BASE;
 680     default:  /* Unknown device, don't do any translation */
 681         return irq_num;
 682     }
 683 }
 684
 685 static void bonito_reset(void *opaque)
 686 {
 687     PCIBonitoState *s = opaque;
 688
 689     /* set the default value of north bridge registers */
 690
 691     s->regs[BONITO_BONPONCFG] = 0xc40;
 692     s->regs[BONITO_BONGENCFG] = 0x1384;
 693     s->regs[BONITO_IODEVCFG] = 0x2bff8010;
 694     s->regs[BONITO_SDCFG] = 0x255e0091;
 695
 696     s->regs[BONITO_GPIODATA] = 0x1ff;
 697     s->regs[BONITO_GPIOIE] = 0x1ff;
 698     s->regs[BONITO_DQCFG] = 0x8;
 699     s->regs[BONITO_MEMSIZE] = 0x10000000;
 700     s->regs[BONITO_PCIMAP] = 0x6140;
 701 }
 702
 703 static const VMStateDescription vmstate_bonito = {
 704     .name = "Bonito",
 705     .version_id = 1,
 706     .minimum_version_id = 1,
 707     .fields = (VMStateField[]) {
 708         VMSTATE_PCI_DEVICE(dev, PCIBonitoState),
 709         VMSTATE_END_OF_LIST()
 710     }
 711 };
 712
 713 static int bonito_pcihost_initfn(SysBusDevice *dev)
 714 {
 715     PCIHostState *phb = PCI_HOST_BRIDGE(dev);
 716
 717     phb->bus = pci_register_bus(DEVICE(dev), "pci",
 718                                 pci_bonito_set_irq, pci_bonito_map_irq, dev,
 719                                 get_system_memory(), get_system_io(),
 720                                 0x28, 32, TYPE_PCI_BUS);
 721
 722     return 0;
 723 }
 724
 725 static void bonito_realize(PCIDevice *dev, Error **errp)
 726 {
 727     PCIBonitoState *s = PCI_BONITO(dev);
 728     SysBusDevice *sysbus = SYS_BUS_DEVICE(s->pcihost);
 729     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 730
 731     /* Bonito North Bridge, built on FPGA, VENDOR_ID/DEVICE_ID are "undefined" */
 732     pci_config_set_prog_interface(dev->config, 0x00);
 733
 734     /* set the north bridge register mapping */
 735     memory_region_init_io(&s->iomem, OBJECT(s), &bonito_ops, s,
 736                           "north-bridge-register", BONITO_INTERNAL_REG_SIZE);
 737     sysbus_init_mmio(sysbus, &s->iomem);
 738     sysbus_mmio_map(sysbus, 0, BONITO_INTERNAL_REG_BASE);
 739
 740     /* set the north bridge pci configure  mapping */
 741     memory_region_init_io(&phb->conf_mem, OBJECT(s), &bonito_pciconf_ops, s,
 742                           "north-bridge-pci-config", BONITO_PCICONFIG_SIZE);
 743     sysbus_init_mmio(sysbus, &phb->conf_mem);
 744     sysbus_mmio_map(sysbus, 1, BONITO_PCICONFIG_BASE);
 745
 746     /* set the south bridge pci configure  mapping */
 747     memory_region_init_io(&phb->data_mem, OBJECT(s), &bonito_spciconf_ops, s,
 748                           "south-bridge-pci-config", BONITO_SPCICONFIG_SIZE);
 749     sysbus_init_mmio(sysbus, &phb->data_mem);
 750     sysbus_mmio_map(sysbus, 2, BONITO_SPCICONFIG_BASE);
 751
 752     memory_region_init_io(&s->iomem_ldma, OBJECT(s), &bonito_ldma_ops, s,
 753                           "ldma", 0x100);
 754     sysbus_init_mmio(sysbus, &s->iomem_ldma);
 755     sysbus_mmio_map(sysbus, 3, 0xbfe00200);
 756
 757     memory_region_init_io(&s->iomem_cop, OBJECT(s), &bonito_cop_ops, s,
 758                           "cop", 0x100);
 759     sysbus_init_mmio(sysbus, &s->iomem_cop);
 760     sysbus_mmio_map(sysbus, 4, 0xbfe00300);
 761
 762     /* Map PCI IO Space  0x1fd0 0000 - 0x1fd1 0000 */
 763     memory_region_init_alias(&s->bonito_pciio, OBJECT(s), "isa_mmio",
 764                              get_system_io(), 0, BONITO_PCIIO_SIZE);
 765     sysbus_init_mmio(sysbus, &s->bonito_pciio);
 766     sysbus_mmio_map(sysbus, 5, BONITO_PCIIO_BASE);
 767
 768     /* add pci local io mapping */
 769     memory_region_init_alias(&s->bonito_localio, OBJECT(s), "isa_mmio",
 770                              get_system_io(), 0, BONITO_DEV_SIZE);
 771     sysbus_init_mmio(sysbus, &s->bonito_localio);
 772     sysbus_mmio_map(sysbus, 6, BONITO_DEV_BASE);
 773
 774     /* set the default value of north bridge pci config */
 775     pci_set_word(dev->config + PCI_COMMAND, 0x0000);
 776     pci_set_word(dev->config + PCI_STATUS, 0x0000);
 777     pci_set_word(dev->config + PCI_SUBSYSTEM_VENDOR_ID, 0x0000);
 778     pci_set_word(dev->config + PCI_SUBSYSTEM_ID, 0x0000);
 779
 780     pci_set_byte(dev->config + PCI_INTERRUPT_LINE, 0x00);
 781     pci_set_byte(dev->config + PCI_INTERRUPT_PIN, 0x01);
 782     pci_set_byte(dev->config + PCI_MIN_GNT, 0x3c);
 783     pci_set_byte(dev->config + PCI_MAX_LAT, 0x00);
 784
 785     qemu_register_reset(bonito_reset, s);
 786 }
 787
 788 PCIBus *bonito_init(qemu_irq *pic)
 789 {
 790     DeviceState *dev;
 791     BonitoState *pcihost;
 792     PCIHostState *phb;
 793     PCIBonitoState *s;
 794     PCIDevice *d;
 795
 796     dev = qdev_create(NULL, TYPE_BONITO_PCI_HOST_BRIDGE);
 797     phb = PCI_HOST_BRIDGE(dev);
 798     pcihost = BONITO_PCI_HOST_BRIDGE(dev);
 799     pcihost->pic = pic;
 800     qdev_init_nofail(dev);
 801
 802     /* set the pcihost pointer before bonito_initfn is called */
 803     d = pci_create(phb->bus, PCI_DEVFN(0, 0), TYPE_PCI_BONITO);
 804     s = PCI_BONITO(d);
 805     s->pcihost = pcihost;
 806     pcihost->pci_dev = s;
 807     qdev_init_nofail(DEVICE(d));
 808
 809     return phb->bus;
 810 }
 811
 812 static void bonito_class_init(ObjectClass *klass, void *data)
 813 {
 814     DeviceClass *dc = DEVICE_CLASS(klass);
 815     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 816
 817     k->realize = bonito_realize;
 818     k->vendor_id = 0xdf53;
 819     k->device_id = 0x00d5;
 820     k->revision = 0x01;
 821     k->class_id = PCI_CLASS_BRIDGE_HOST;
 822     dc->desc = "Host bridge";
 823     dc->vmsd = &vmstate_bonito;
 824     /*
 825      * PCI-facing part of the host bridge, not usable without the
 826      * host-facing part, which can't be device_add'ed, yet.
 827      */
 828     dc->cannot_instantiate_with_device_add_yet = true;
 829 }
 830
 831 static const TypeInfo bonito_info = {
 832     .name          = TYPE_PCI_BONITO,
 833     .parent        = TYPE_PCI_DEVICE,
 834     .instance_size = sizeof(PCIBonitoState),
 835     .class_init    = bonito_class_init,
 836 };
 837
 838 static void bonito_pcihost_class_init(ObjectClass *klass, void *data)
 839 {
 840     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 841
 842     k->init = bonito_pcihost_initfn;
 843 }
 844
 845 static const TypeInfo bonito_pcihost_info = {
 846     .name          = TYPE_BONITO_PCI_HOST_BRIDGE,
 847     .parent        = TYPE_PCI_HOST_BRIDGE,
 848     .instance_size = sizeof(BonitoState),
 849     .class_init    = bonito_pcihost_class_init,
 850 };
 851
 852 static void bonito_register_types(void)
 853 {
 854     type_register_static(&bonito_pcihost_info);
 855     type_register_static(&bonito_info);
 856 }
 857
 858 type_init(bonito_register_types)