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  * fuloong 2e mini pc has a bonito north bridge.
  15  */
  16
  17 /*
  18  * what is the meaning of devfn in qemu and IDSEL in bonito northbridge?
  19  *
  20  * devfn   pci_slot<<3  + funno
  21  * one pci bus can have 32 devices and each device can have 8 functions.
  22  *
  23  * In bonito north bridge, pci slot = IDSEL bit - 12.
  24  * For example, PCI_IDSEL_VIA686B = 17,
  25  * pci slot = 17-12=5
  26  *
  27  * so
  28  * VT686B_FUN0's devfn = (5<<3)+0
  29  * VT686B_FUN1's devfn = (5<<3)+1
  30  *
  31  * qemu also uses pci address for north bridge to access pci config register.
  32  * bus_no   [23:16]
  33  * dev_no   [15:11]
  34  * fun_no   [10:8]
  35  * reg_no   [7:2]
  36  *
  37  * so function bonito_sbridge_pciaddr for the translation from
  38  * north bridge address to pci address.
  39  */
  40
  41 #include "qemu/osdep.h"
  42 #include "qemu/units.h"
  43 #include "qapi/error.h"
  44 #include "qemu/error-report.h"
  45 #include "hw/pci/pci_device.h"
  46 #include "hw/irq.h"
  47 #include "hw/mips/mips.h"
  48 #include "hw/pci-host/bonito.h"
  49 #include "hw/pci/pci_host.h"
  50 #include "migration/vmstate.h"
  51 #include "sysemu/runstate.h"
  52 #include "hw/misc/unimp.h"
  53 #include "hw/registerfields.h"
  54 #include "qom/object.h"
  55 #include "trace.h"
  56
  57 /* #define DEBUG_BONITO */
  58
  59 #ifdef DEBUG_BONITO
  60 #define DPRINTF(fmt, ...) fprintf(stderr, "%s: " fmt, __func__, ##__VA_ARGS__)
  61 #else
  62 #define DPRINTF(fmt, ...)
  63 #endif
  64
  65 /* from linux source code. include/asm-mips/mips-boards/bonito64.h*/
  66 #define BONITO_BOOT_BASE        0x1fc00000
  67 #define BONITO_BOOT_SIZE        0x00100000
  68 #define BONITO_BOOT_TOP         (BONITO_BOOT_BASE + BONITO_BOOT_SIZE - 1)
  69 #define BONITO_FLASH_BASE       0x1c000000
  70 #define BONITO_FLASH_SIZE       0x03000000
  71 #define BONITO_FLASH_TOP        (BONITO_FLASH_BASE + BONITO_FLASH_SIZE - 1)
  72 #define BONITO_SOCKET_BASE      0x1f800000
  73 #define BONITO_SOCKET_SIZE      0x00400000
  74 #define BONITO_SOCKET_TOP       (BONITO_SOCKET_BASE + BONITO_SOCKET_SIZE - 1)
  75 #define BONITO_REG_BASE         0x1fe00000
  76 #define BONITO_REG_SIZE         0x00040000
  77 #define BONITO_REG_TOP          (BONITO_REG_BASE + BONITO_REG_SIZE - 1)
  78 #define BONITO_DEV_BASE         0x1ff00000
  79 #define BONITO_DEV_SIZE         0x00100000
  80 #define BONITO_DEV_TOP          (BONITO_DEV_BASE + BONITO_DEV_SIZE - 1)
  81 #define BONITO_PCILO_BASE       0x10000000
  82 #define BONITO_PCILO_BASE_VA    0xb0000000
  83 #define BONITO_PCILO_SIZE       0x0c000000
  84 #define BONITO_PCILO_TOP        (BONITO_PCILO_BASE + BONITO_PCILO_SIZE - 1)
  85 #define BONITO_PCILO0_BASE      0x10000000
  86 #define BONITO_PCILO1_BASE      0x14000000
  87 #define BONITO_PCILO2_BASE      0x18000000
  88 #define BONITO_PCIHI_BASE       0x20000000
  89 #define BONITO_PCIHI_SIZE       0x60000000
  90 #define BONITO_PCIHI_TOP        (BONITO_PCIHI_BASE + BONITO_PCIHI_SIZE - 1)
  91 #define BONITO_PCIIO_BASE       0x1fd00000
  92 #define BONITO_PCIIO_BASE_VA    0xbfd00000
  93 #define BONITO_PCIIO_SIZE       0x00010000
  94 #define BONITO_PCIIO_TOP        (BONITO_PCIIO_BASE + BONITO_PCIIO_SIZE - 1)
  95 #define BONITO_PCICFG_BASE      0x1fe80000
  96 #define BONITO_PCICFG_SIZE      0x00080000
  97 #define BONITO_PCICFG_TOP       (BONITO_PCICFG_BASE + BONITO_PCICFG_SIZE - 1)
  98
  99
 100 #define BONITO_PCICONFIGBASE    0x00
 101 #define BONITO_REGBASE          0x100
 102
 103 #define BONITO_PCICONFIG_BASE   (BONITO_PCICONFIGBASE + BONITO_REG_BASE)
 104 #define BONITO_PCICONFIG_SIZE   (0x100)
 105
 106 #define BONITO_INTERNAL_REG_BASE  (BONITO_REGBASE + BONITO_REG_BASE)
 107 #define BONITO_INTERNAL_REG_SIZE  (0x70)
 108
 109 #define BONITO_SPCICONFIG_BASE  (BONITO_PCICFG_BASE)
 110 #define BONITO_SPCICONFIG_SIZE  (BONITO_PCICFG_SIZE)
 111
 112
 113
 114 /* 1. Bonito h/w Configuration */
 115 /* Power on register */
 116
 117 #define BONITO_BONPONCFG        (0x00 >> 2)      /* 0x100 */
 118
 119 /* PCI configuration register */
 120 #define BONITO_BONGENCFG_OFFSET 0x4
 121 #define BONITO_BONGENCFG        (BONITO_BONGENCFG_OFFSET >> 2)   /*0x104 */
 122 REG32(BONGENCFG,        0x104)
 123 FIELD(BONGENCFG, DEBUGMODE,      0, 1)
 124 FIELD(BONGENCFG, SNOOP,          1, 1)
 125 FIELD(BONGENCFG, CPUSELFRESET,   2, 1)
 126 FIELD(BONGENCFG, BYTESWAP,       6, 1)
 127 FIELD(BONGENCFG, UNCACHED,       7, 1)
 128 FIELD(BONGENCFG, PREFETCH,       8, 1)
 129 FIELD(BONGENCFG, WRITEBEHIND,    9, 1)
 130 FIELD(BONGENCFG, PCIQUEUE,      12, 1)
 131
 132 /* 2. IO & IDE configuration */
 133 #define BONITO_IODEVCFG         (0x08 >> 2)      /* 0x108 */
 134
 135 /* 3. IO & IDE configuration */
 136 #define BONITO_SDCFG            (0x0c >> 2)      /* 0x10c */
 137
 138 /* 4. PCI address map control */
 139 #define BONITO_PCIMAP           (0x10 >> 2)      /* 0x110 */
 140 #define BONITO_PCIMEMBASECFG    (0x14 >> 2)      /* 0x114 */
 141 #define BONITO_PCIMAP_CFG       (0x18 >> 2)      /* 0x118 */
 142
 143 /* 5. ICU & GPIO regs */
 144 /* GPIO Regs - r/w */
 145 #define BONITO_GPIODATA_OFFSET  0x1c
 146 #define BONITO_GPIODATA         (BONITO_GPIODATA_OFFSET >> 2)   /* 0x11c */
 147 #define BONITO_GPIOIE           (0x20 >> 2)      /* 0x120 */
 148
 149 /* ICU Configuration Regs - r/w */
 150 #define BONITO_INTEDGE          (0x24 >> 2)      /* 0x124 */
 151 #define BONITO_INTSTEER         (0x28 >> 2)      /* 0x128 */
 152 #define BONITO_INTPOL           (0x2c >> 2)      /* 0x12c */
 153
 154 /* ICU Enable Regs - IntEn & IntISR are r/o. */
 155 #define BONITO_INTENSET         (0x30 >> 2)      /* 0x130 */
 156 #define BONITO_INTENCLR         (0x34 >> 2)      /* 0x134 */
 157 #define BONITO_INTEN            (0x38 >> 2)      /* 0x138 */
 158 #define BONITO_INTISR           (0x3c >> 2)      /* 0x13c */
 159
 160 /* PCI mail boxes */
 161 #define BONITO_PCIMAIL0_OFFSET    0x40
 162 #define BONITO_PCIMAIL1_OFFSET    0x44
 163 #define BONITO_PCIMAIL2_OFFSET    0x48
 164 #define BONITO_PCIMAIL3_OFFSET    0x4c
 165 #define BONITO_PCIMAIL0         (0x40 >> 2)      /* 0x140 */
 166 #define BONITO_PCIMAIL1         (0x44 >> 2)      /* 0x144 */
 167 #define BONITO_PCIMAIL2         (0x48 >> 2)      /* 0x148 */
 168 #define BONITO_PCIMAIL3         (0x4c >> 2)      /* 0x14c */
 169
 170 /* 6. PCI cache */
 171 #define BONITO_PCICACHECTRL     (0x50 >> 2)      /* 0x150 */
 172 #define BONITO_PCICACHETAG      (0x54 >> 2)      /* 0x154 */
 173 #define BONITO_PCIBADADDR       (0x58 >> 2)      /* 0x158 */
 174 #define BONITO_PCIMSTAT         (0x5c >> 2)      /* 0x15c */
 175
 176 /* 7. other*/
 177 #define BONITO_TIMECFG          (0x60 >> 2)      /* 0x160 */
 178 #define BONITO_CPUCFG           (0x64 >> 2)      /* 0x164 */
 179 #define BONITO_DQCFG            (0x68 >> 2)      /* 0x168 */
 180 #define BONITO_MEMSIZE          (0x6C >> 2)      /* 0x16c */
 181
 182 #define BONITO_REGS             (0x70 >> 2)
 183
 184 /* PCI config for south bridge. type 0 */
 185 #define BONITO_PCICONF_IDSEL_MASK      0xfffff800     /* [31:11] */
 186 #define BONITO_PCICONF_IDSEL_OFFSET    11
 187 #define BONITO_PCICONF_FUN_MASK        0x700    /* [10:8] */
 188 #define BONITO_PCICONF_FUN_OFFSET      8
 189 #define BONITO_PCICONF_REG_MASK_DS     (~3)         /* Per datasheet */
 190 #define BONITO_PCICONF_REG_MASK_HW     0xff         /* As seen running PMON */
 191 #define BONITO_PCICONF_REG_OFFSET      0
 192
 193
 194 /* idsel BIT = pci slot number +12 */
 195 #define PCI_SLOT_BASE              12
 196 #define PCI_IDSEL_VIA686B_BIT      (17)
 197 #define PCI_IDSEL_VIA686B          (1 << PCI_IDSEL_VIA686B_BIT)
 198
 199 #define PCI_ADDR(busno , devno , funno , regno)  \
 200     ((PCI_BUILD_BDF(busno, PCI_DEVFN(devno , funno)) << 8) + (regno))
 201
 202 typedef struct BonitoState BonitoState;
 203
 204 struct PCIBonitoState {
 205     PCIDevice dev;
 206
 207     BonitoState *pcihost;
 208     uint32_t regs[BONITO_REGS];
 209
 210     struct bonldma {
 211         uint32_t ldmactrl;
 212         uint32_t ldmastat;
 213         uint32_t ldmaaddr;
 214         uint32_t ldmago;
 215     } bonldma;
 216
 217     /* Based at 1fe00300, bonito Copier */
 218     struct boncop {
 219         uint32_t copctrl;
 220         uint32_t copstat;
 221         uint32_t coppaddr;
 222         uint32_t copgo;
 223     } boncop;
 224
 225     /* Bonito registers */
 226     MemoryRegion iomem;
 227     MemoryRegion iomem_ldma;
 228     MemoryRegion iomem_cop;
 229     MemoryRegion bonito_pciio;
 230     MemoryRegion bonito_localio;
 231
 232 };
 233 typedef struct PCIBonitoState PCIBonitoState;
 234
 235 struct BonitoState {
 236     PCIHostState parent_obj;
 237     qemu_irq *pic;
 238     PCIBonitoState *pci_dev;
 239     MemoryRegion pci_mem;
 240 };
 241
 242 #define TYPE_PCI_BONITO "Bonito"
 243 OBJECT_DECLARE_SIMPLE_TYPE(PCIBonitoState, PCI_BONITO)
 244
 245 static void bonito_writel(void *opaque, hwaddr addr,
 246                           uint64_t val, unsigned size)
 247 {
 248     PCIBonitoState *s = opaque;
 249     uint32_t saddr;
 250     int reset = 0;
 251
 252     saddr = addr >> 2;
 253
 254     DPRINTF("bonito_writel "HWADDR_FMT_plx" val %lx saddr %x\n",
 255             addr, val, saddr);
 256     switch (saddr) {
 257     case BONITO_BONPONCFG:
 258     case BONITO_IODEVCFG:
 259     case BONITO_SDCFG:
 260     case BONITO_PCIMAP:
 261     case BONITO_PCIMEMBASECFG:
 262     case BONITO_PCIMAP_CFG:
 263     case BONITO_GPIODATA:
 264     case BONITO_GPIOIE:
 265     case BONITO_INTEDGE:
 266     case BONITO_INTSTEER:
 267     case BONITO_INTPOL:
 268     case BONITO_PCIMAIL0:
 269     case BONITO_PCIMAIL1:
 270     case BONITO_PCIMAIL2:
 271     case BONITO_PCIMAIL3:
 272     case BONITO_PCICACHECTRL:
 273     case BONITO_PCICACHETAG:
 274     case BONITO_PCIBADADDR:
 275     case BONITO_PCIMSTAT:
 276     case BONITO_TIMECFG:
 277     case BONITO_CPUCFG:
 278     case BONITO_DQCFG:
 279     case BONITO_MEMSIZE:
 280         s->regs[saddr] = val;
 281         break;
 282     case BONITO_BONGENCFG:
 283         if (!(s->regs[saddr] & 0x04) && (val & 0x04)) {
 284             reset = 1; /* bit 2 jump from 0 to 1 cause reset */
 285         }
 286         s->regs[saddr] = val;
 287         if (reset) {
 288             qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
 289         }
 290         break;
 291     case BONITO_INTENSET:
 292         s->regs[BONITO_INTENSET] = val;
 293         s->regs[BONITO_INTEN] |= val;
 294         break;
 295     case BONITO_INTENCLR:
 296         s->regs[BONITO_INTENCLR] = val;
 297         s->regs[BONITO_INTEN] &= ~val;
 298         break;
 299     case BONITO_INTEN:
 300     case BONITO_INTISR:
 301         DPRINTF("write to readonly bonito register %x\n", saddr);
 302         break;
 303     default:
 304         DPRINTF("write to unknown bonito register %x\n", saddr);
 305         break;
 306     }
 307 }
 308
 309 static uint64_t bonito_readl(void *opaque, hwaddr addr,
 310                              unsigned size)
 311 {
 312     PCIBonitoState *s = opaque;
 313     uint32_t saddr;
 314
 315     saddr = addr >> 2;
 316
 317     DPRINTF("bonito_readl "HWADDR_FMT_plx"\n", addr);
 318     switch (saddr) {
 319     case BONITO_INTISR:
 320         return s->regs[saddr];
 321     default:
 322         return s->regs[saddr];
 323     }
 324 }
 325
 326 static const MemoryRegionOps bonito_ops = {
 327     .read = bonito_readl,
 328     .write = bonito_writel,
 329     .endianness = DEVICE_NATIVE_ENDIAN,
 330     .valid = {
 331         .min_access_size = 4,
 332         .max_access_size = 4,
 333     },
 334 };
 335
 336 static void bonito_pciconf_writel(void *opaque, hwaddr addr,
 337                                   uint64_t val, unsigned size)
 338 {
 339     PCIBonitoState *s = opaque;
 340     PCIDevice *d = PCI_DEVICE(s);
 341
 342     DPRINTF("bonito_pciconf_writel "HWADDR_FMT_plx" val %lx\n", addr, val);
 343     d->config_write(d, addr, val, 4);
 344 }
 345
 346 static uint64_t bonito_pciconf_readl(void *opaque, hwaddr addr,
 347                                      unsigned size)
 348 {
 349
 350     PCIBonitoState *s = opaque;
 351     PCIDevice *d = PCI_DEVICE(s);
 352
 353     DPRINTF("bonito_pciconf_readl "HWADDR_FMT_plx"\n", addr);
 354     return d->config_read(d, addr, 4);
 355 }
 356
 357 /* north bridge PCI configure space. 0x1fe0 0000 - 0x1fe0 00ff */
 358
 359 static const MemoryRegionOps bonito_pciconf_ops = {
 360     .read = bonito_pciconf_readl,
 361     .write = bonito_pciconf_writel,
 362     .endianness = DEVICE_NATIVE_ENDIAN,
 363     .valid = {
 364         .min_access_size = 4,
 365         .max_access_size = 4,
 366     },
 367 };
 368
 369 static uint64_t bonito_ldma_readl(void *opaque, hwaddr addr,
 370                                   unsigned size)
 371 {
 372     uint32_t val;
 373     PCIBonitoState *s = opaque;
 374
 375     if (addr >= sizeof(s->bonldma)) {
 376         return 0;
 377     }
 378
 379     val = ((uint32_t *)(&s->bonldma))[addr / sizeof(uint32_t)];
 380
 381     return val;
 382 }
 383
 384 static void bonito_ldma_writel(void *opaque, hwaddr addr,
 385                                uint64_t val, unsigned size)
 386 {
 387     PCIBonitoState *s = opaque;
 388
 389     if (addr >= sizeof(s->bonldma)) {
 390         return;
 391     }
 392
 393     ((uint32_t *)(&s->bonldma))[addr / sizeof(uint32_t)] = val & 0xffffffff;
 394 }
 395
 396 static const MemoryRegionOps bonito_ldma_ops = {
 397     .read = bonito_ldma_readl,
 398     .write = bonito_ldma_writel,
 399     .endianness = DEVICE_NATIVE_ENDIAN,
 400     .valid = {
 401         .min_access_size = 4,
 402         .max_access_size = 4,
 403     },
 404 };
 405
 406 static uint64_t bonito_cop_readl(void *opaque, hwaddr addr,
 407                                  unsigned size)
 408 {
 409     uint32_t val;
 410     PCIBonitoState *s = opaque;
 411
 412     if (addr >= sizeof(s->boncop)) {
 413         return 0;
 414     }
 415
 416     val = ((uint32_t *)(&s->boncop))[addr / sizeof(uint32_t)];
 417
 418     return val;
 419 }
 420
 421 static void bonito_cop_writel(void *opaque, hwaddr addr,
 422                               uint64_t val, unsigned size)
 423 {
 424     PCIBonitoState *s = opaque;
 425
 426     if (addr >= sizeof(s->boncop)) {
 427         return;
 428     }
 429
 430     ((uint32_t *)(&s->boncop))[addr / sizeof(uint32_t)] = val & 0xffffffff;
 431 }
 432
 433 static const MemoryRegionOps bonito_cop_ops = {
 434     .read = bonito_cop_readl,
 435     .write = bonito_cop_writel,
 436     .endianness = DEVICE_NATIVE_ENDIAN,
 437     .valid = {
 438         .min_access_size = 4,
 439         .max_access_size = 4,
 440     },
 441 };
 442
 443 static uint32_t bonito_sbridge_pciaddr(void *opaque, hwaddr addr)
 444 {
 445     PCIBonitoState *s = opaque;
 446     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 447     uint32_t cfgaddr;
 448     uint32_t idsel;
 449     uint32_t devno;
 450     uint32_t funno;
 451     uint32_t regno;
 452     uint32_t pciaddr;
 453
 454     /* support type0 pci config */
 455     if ((s->regs[BONITO_PCIMAP_CFG] & 0x10000) != 0x0) {
 456         return 0xffffffff;
 457     }
 458
 459     cfgaddr = addr & 0xffff;
 460     cfgaddr |= (s->regs[BONITO_PCIMAP_CFG] & 0xffff) << 16;
 461
 462     idsel = (cfgaddr & BONITO_PCICONF_IDSEL_MASK) >>
 463              BONITO_PCICONF_IDSEL_OFFSET;
 464     devno = ctz32(idsel);
 465     funno = (cfgaddr & BONITO_PCICONF_FUN_MASK) >> BONITO_PCICONF_FUN_OFFSET;
 466     regno = (cfgaddr & BONITO_PCICONF_REG_MASK_HW) >> BONITO_PCICONF_REG_OFFSET;
 467
 468     if (idsel == 0) {
 469         error_report("error in bonito pci config address 0x" HWADDR_FMT_plx
 470                      ",pcimap_cfg=0x%x", addr, s->regs[BONITO_PCIMAP_CFG]);
 471         exit(1);
 472     }
 473     pciaddr = PCI_ADDR(pci_bus_num(phb->bus), devno, funno, regno);
 474     DPRINTF("cfgaddr %x pciaddr %x busno %x devno %d funno %d regno %d\n",
 475         cfgaddr, pciaddr, pci_bus_num(phb->bus), devno, funno, regno);
 476
 477     return pciaddr;
 478 }
 479
 480 static void bonito_spciconf_write(void *opaque, hwaddr addr, uint64_t val,
 481                                   unsigned size)
 482 {
 483     PCIBonitoState *s = opaque;
 484     PCIDevice *d = PCI_DEVICE(s);
 485     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 486     uint32_t pciaddr;
 487     uint16_t status;
 488
 489     DPRINTF("bonito_spciconf_write "HWADDR_FMT_plx" size %d val %lx\n",
 490             addr, size, val);
 491
 492     pciaddr = bonito_sbridge_pciaddr(s, addr);
 493
 494     if (pciaddr == 0xffffffff) {
 495         return;
 496     }
 497     if (addr & ~BONITO_PCICONF_REG_MASK_DS) {
 498         trace_bonito_spciconf_small_access(addr, size);
 499     }
 500
 501     /* set the pci address in s->config_reg */
 502     phb->config_reg = (pciaddr) | (1u << 31);
 503     pci_data_write(phb->bus, phb->config_reg, val, size);
 504
 505     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 506     status = pci_get_word(d->config + PCI_STATUS);
 507     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 508     pci_set_word(d->config + PCI_STATUS, status);
 509 }
 510
 511 static uint64_t bonito_spciconf_read(void *opaque, hwaddr addr, unsigned size)
 512 {
 513     PCIBonitoState *s = opaque;
 514     PCIDevice *d = PCI_DEVICE(s);
 515     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 516     uint32_t pciaddr;
 517     uint16_t status;
 518
 519     DPRINTF("bonito_spciconf_read "HWADDR_FMT_plx" size %d\n", addr, size);
 520
 521     pciaddr = bonito_sbridge_pciaddr(s, addr);
 522
 523     if (pciaddr == 0xffffffff) {
 524         return MAKE_64BIT_MASK(0, size * 8);
 525     }
 526     if (addr & ~BONITO_PCICONF_REG_MASK_DS) {
 527         trace_bonito_spciconf_small_access(addr, size);
 528     }
 529
 530     /* set the pci address in s->config_reg */
 531     phb->config_reg = (pciaddr) | (1u << 31);
 532
 533     /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */
 534     status = pci_get_word(d->config + PCI_STATUS);
 535     status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT);
 536     pci_set_word(d->config + PCI_STATUS, status);
 537
 538     return pci_data_read(phb->bus, phb->config_reg, size);
 539 }
 540
 541 /* south bridge PCI configure space. 0x1fe8 0000 - 0x1fef ffff */
 542 static const MemoryRegionOps bonito_spciconf_ops = {
 543     .read = bonito_spciconf_read,
 544     .write = bonito_spciconf_write,
 545     .valid.min_access_size = 1,
 546     .valid.max_access_size = 4,
 547     .impl.min_access_size = 1,
 548     .impl.max_access_size = 4,
 549     .endianness = DEVICE_NATIVE_ENDIAN,
 550 };
 551
 552 #define BONITO_IRQ_BASE 32
 553
 554 static void pci_bonito_set_irq(void *opaque, int irq_num, int level)
 555 {
 556     BonitoState *s = opaque;
 557     qemu_irq *pic = s->pic;
 558     PCIBonitoState *bonito_state = s->pci_dev;
 559     int internal_irq = irq_num - BONITO_IRQ_BASE;
 560
 561     if (bonito_state->regs[BONITO_INTEDGE] & (1 << internal_irq)) {
 562         qemu_irq_pulse(*pic);
 563     } else {   /* level triggered */
 564         if (bonito_state->regs[BONITO_INTPOL] & (1 << internal_irq)) {
 565             qemu_irq_raise(*pic);
 566         } else {
 567             qemu_irq_lower(*pic);
 568         }
 569     }
 570 }
 571
 572 /* map the original irq (0~3) to bonito irq (16~47, but 16~31 are unused) */
 573 static int pci_bonito_map_irq(PCIDevice *pci_dev, int irq_num)
 574 {
 575     int slot;
 576
 577     slot = PCI_SLOT(pci_dev->devfn);
 578
 579     switch (slot) {
 580     case 5:   /* FULOONG2E_VIA_SLOT, SouthBridge, IDE, USB, ACPI, AC97, MC97 */
 581         return irq_num % 4 + BONITO_IRQ_BASE;
 582     case 6:   /* FULOONG2E_ATI_SLOT, VGA */
 583         return 4 + BONITO_IRQ_BASE;
 584     case 7:   /* FULOONG2E_RTL_SLOT, RTL8139 */
 585         return 5 + BONITO_IRQ_BASE;
 586     case 8 ... 12: /* PCI slot 1 to 4 */
 587         return (slot - 8 + irq_num) + 6 + BONITO_IRQ_BASE;
 588     default:  /* Unknown device, don't do any translation */
 589         return irq_num;
 590     }
 591 }
 592
 593 static void bonito_reset_hold(Object *obj, ResetType type)
 594 {
 595     PCIBonitoState *s = PCI_BONITO(obj);
 596     uint32_t val = 0;
 597
 598     /* set the default value of north bridge registers */
 599
 600     s->regs[BONITO_BONPONCFG] = 0xc40;
 601     val = FIELD_DP32(val, BONGENCFG, PCIQUEUE, 1);
 602     val = FIELD_DP32(val, BONGENCFG, WRITEBEHIND, 1);
 603     val = FIELD_DP32(val, BONGENCFG, PREFETCH, 1);
 604     val = FIELD_DP32(val, BONGENCFG, UNCACHED, 1);
 605     val = FIELD_DP32(val, BONGENCFG, CPUSELFRESET, 1);
 606     s->regs[BONITO_BONGENCFG] = val;
 607
 608     s->regs[BONITO_IODEVCFG] = 0x2bff8010;
 609     s->regs[BONITO_SDCFG] = 0x255e0091;
 610
 611     s->regs[BONITO_GPIODATA] = 0x1ff;
 612     s->regs[BONITO_GPIOIE] = 0x1ff;
 613     s->regs[BONITO_DQCFG] = 0x8;
 614     s->regs[BONITO_MEMSIZE] = 0x10000000;
 615     s->regs[BONITO_PCIMAP] = 0x6140;
 616 }
 617
 618 static const VMStateDescription vmstate_bonito = {
 619     .name = "Bonito",
 620     .version_id = 1,
 621     .minimum_version_id = 1,
 622     .fields = (const VMStateField[]) {
 623         VMSTATE_PCI_DEVICE(dev, PCIBonitoState),
 624         VMSTATE_END_OF_LIST()
 625     }
 626 };
 627
 628 static void bonito_host_realize(DeviceState *dev, Error **errp)
 629 {
 630     PCIHostState *phb = PCI_HOST_BRIDGE(dev);
 631     BonitoState *bs = BONITO_PCI_HOST_BRIDGE(dev);
 632     MemoryRegion *pcimem_lo_alias = g_new(MemoryRegion, 3);
 633
 634     memory_region_init(&bs->pci_mem, OBJECT(dev), "pci.mem", BONITO_PCIHI_SIZE);
 635     phb->bus = pci_register_root_bus(dev, "pci",
 636                                      pci_bonito_set_irq, pci_bonito_map_irq,
 637                                      dev, &bs->pci_mem, get_system_io(),
 638                                      PCI_DEVFN(5, 0), 32, TYPE_PCI_BUS);
 639
 640     for (size_t i = 0; i < 3; i++) {
 641         char *name = g_strdup_printf("pci.lomem%zu", i);
 642
 643         memory_region_init_alias(&pcimem_lo_alias[i], NULL, name,
 644                                  &bs->pci_mem, i * 64 * MiB, 64 * MiB);
 645         memory_region_add_subregion(get_system_memory(),
 646                                     BONITO_PCILO_BASE + i * 64 * MiB,
 647                                     &pcimem_lo_alias[i]);
 648         g_free(name);
 649     }
 650
 651     create_unimplemented_device("pci.io", BONITO_PCIIO_BASE, 1 * MiB);
 652 }
 653
 654 static void bonito_pci_realize(PCIDevice *dev, Error **errp)
 655 {
 656     PCIBonitoState *s = PCI_BONITO(dev);
 657     MemoryRegion *host_mem = get_system_memory();
 658     PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
 659     BonitoState *bs = s->pcihost;
 660     MemoryRegion *pcimem_alias = g_new(MemoryRegion, 1);
 661
 662     /*
 663      * Bonito North Bridge, built on FPGA,
 664      * VENDOR_ID/DEVICE_ID are "undefined"
 665      */
 666     pci_config_set_prog_interface(dev->config, 0x00);
 667
 668     /* set the north bridge register mapping */
 669     memory_region_init_io(&s->iomem, OBJECT(s), &bonito_ops, s,
 670                           "north-bridge-register", BONITO_INTERNAL_REG_SIZE);
 671     memory_region_add_subregion(host_mem, BONITO_INTERNAL_REG_BASE, &s->iomem);
 672
 673     /* set the north bridge pci configure  mapping */
 674     memory_region_init_io(&phb->conf_mem, OBJECT(s), &bonito_pciconf_ops, s,
 675                           "north-bridge-pci-config", BONITO_PCICONFIG_SIZE);
 676     memory_region_add_subregion(host_mem, BONITO_PCICONFIG_BASE,
 677                                 &phb->conf_mem);
 678
 679     /* set the south bridge pci configure  mapping */
 680     memory_region_init_io(&phb->data_mem, OBJECT(s), &bonito_spciconf_ops, s,
 681                           "south-bridge-pci-config", BONITO_SPCICONFIG_SIZE);
 682     memory_region_add_subregion(host_mem, BONITO_SPCICONFIG_BASE,
 683                                 &phb->data_mem);
 684
 685     create_unimplemented_device("bonito", BONITO_REG_BASE, BONITO_REG_SIZE);
 686
 687     memory_region_init_io(&s->iomem_ldma, OBJECT(s), &bonito_ldma_ops, s,
 688                           "ldma", 0x100);
 689     memory_region_add_subregion(host_mem, 0x1fe00200, &s->iomem_ldma);
 690
 691     /* PCI copier */
 692     memory_region_init_io(&s->iomem_cop, OBJECT(s), &bonito_cop_ops, s,
 693                           "cop", 0x100);
 694     memory_region_add_subregion(host_mem, 0x1fe00300, &s->iomem_cop);
 695
 696     create_unimplemented_device("ROMCS", BONITO_FLASH_BASE, 60 * MiB);
 697
 698     /* Map PCI IO Space  0x1fd0 0000 - 0x1fd1 0000 */
 699     memory_region_init_alias(&s->bonito_pciio, OBJECT(s), "isa_mmio",
 700                              get_system_io(), 0, BONITO_PCIIO_SIZE);
 701     memory_region_add_subregion(host_mem, BONITO_PCIIO_BASE,
 702                                 &s->bonito_pciio);
 703
 704     /* add pci local io mapping */
 705
 706     memory_region_init_alias(&s->bonito_localio, OBJECT(s), "IOCS[0]",
 707                              get_system_io(), 0, 256 * KiB);
 708     memory_region_add_subregion(host_mem, BONITO_DEV_BASE,
 709                                 &s->bonito_localio);
 710     create_unimplemented_device("IOCS[1]", BONITO_DEV_BASE + 1 * 256 * KiB,
 711                                 256 * KiB);
 712     create_unimplemented_device("IOCS[2]", BONITO_DEV_BASE + 2 * 256 * KiB,
 713                                 256 * KiB);
 714     create_unimplemented_device("IOCS[3]", BONITO_DEV_BASE + 3 * 256 * KiB,
 715                                 256 * KiB);
 716
 717     memory_region_init_alias(pcimem_alias, NULL, "pci.mem.alias",
 718                              &bs->pci_mem, 0, BONITO_PCIHI_SIZE);
 719     memory_region_add_subregion(host_mem, BONITO_PCIHI_BASE, pcimem_alias);
 720     create_unimplemented_device("PCI_2",
 721                                 (hwaddr)BONITO_PCIHI_BASE + BONITO_PCIHI_SIZE,
 722                                 2 * GiB);
 723
 724     /* set the default value of north bridge pci config */
 725     pci_set_word(dev->config + PCI_COMMAND, 0x0000);
 726     pci_set_word(dev->config + PCI_STATUS, 0x0000);
 727     pci_set_word(dev->config + PCI_SUBSYSTEM_VENDOR_ID, 0x0000);
 728     pci_set_word(dev->config + PCI_SUBSYSTEM_ID, 0x0000);
 729
 730     pci_set_byte(dev->config + PCI_INTERRUPT_LINE, 0x00);
 731     pci_config_set_interrupt_pin(dev->config, 0x01); /* interrupt pin A */
 732
 733     pci_set_byte(dev->config + PCI_MIN_GNT, 0x3c);
 734     pci_set_byte(dev->config + PCI_MAX_LAT, 0x00);
 735 }
 736
 737 PCIBus *bonito_init(qemu_irq *pic)
 738 {
 739     DeviceState *dev;
 740     BonitoState *pcihost;
 741     PCIHostState *phb;
 742     PCIBonitoState *s;
 743     PCIDevice *d;
 744
 745     dev = qdev_new(TYPE_BONITO_PCI_HOST_BRIDGE);
 746     phb = PCI_HOST_BRIDGE(dev);
 747     pcihost = BONITO_PCI_HOST_BRIDGE(dev);
 748     pcihost->pic = pic;
 749     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
 750
 751     d = pci_new(PCI_DEVFN(0, 0), TYPE_PCI_BONITO);
 752     s = PCI_BONITO(d);
 753     s->pcihost = pcihost;
 754     pcihost->pci_dev = s;
 755     pci_realize_and_unref(d, phb->bus, &error_fatal);
 756
 757     return phb->bus;
 758 }
 759
 760 static void bonito_pci_class_init(ObjectClass *klass, void *data)
 761 {
 762     DeviceClass *dc = DEVICE_CLASS(klass);
 763     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 764     ResettableClass *rc = RESETTABLE_CLASS(klass);
 765
 766     rc->phases.hold = bonito_reset_hold;
 767     k->realize = bonito_pci_realize;
 768     k->vendor_id = 0xdf53;
 769     k->device_id = 0x00d5;
 770     k->revision = 0x01;
 771     k->class_id = PCI_CLASS_BRIDGE_HOST;
 772     dc->desc = "Host bridge";
 773     dc->vmsd = &vmstate_bonito;
 774     /*
 775      * PCI-facing part of the host bridge, not usable without the
 776      * host-facing part, which can't be device_add'ed, yet.
 777      */
 778     dc->user_creatable = false;
 779 }
 780
 781 static const TypeInfo bonito_pci_info = {
 782     .name          = TYPE_PCI_BONITO,
 783     .parent        = TYPE_PCI_DEVICE,
 784     .instance_size = sizeof(PCIBonitoState),
 785     .class_init    = bonito_pci_class_init,
 786     .interfaces = (InterfaceInfo[]) {
 787         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 788         { },
 789     },
 790 };
 791
 792 static void bonito_host_class_init(ObjectClass *klass, void *data)
 793 {
 794     DeviceClass *dc = DEVICE_CLASS(klass);
 795
 796     dc->realize = bonito_host_realize;
 797 }
 798
 799 static const TypeInfo bonito_host_info = {
 800     .name          = TYPE_BONITO_PCI_HOST_BRIDGE,
 801     .parent        = TYPE_PCI_HOST_BRIDGE,
 802     .instance_size = sizeof(BonitoState),
 803     .class_init    = bonito_host_class_init,
 804 };
 805
 806 static void bonito_register_types(void)
 807 {
 808     type_register_static(&bonito_host_info);
 809     type_register_static(&bonito_pci_info);
 810 }
 811
 812 type_init(bonito_register_types)