hw/ppc/ppc440_uc.c

   1 /*
   2  * QEMU PowerPC 440 embedded processors emulation
   3  *
   4  * Copyright (c) 2012 François Revol
   5  * Copyright (c) 2016-2019 BALATON Zoltan
   6  *
   7  * This work is licensed under the GNU GPL license version 2 or later.
   8  *
   9  */
  10
  11 #include "qemu/osdep.h"
  12 #include "qemu/units.h"
  13 #include "qemu/error-report.h"
  14 #include "qapi/error.h"
  15 #include "qemu/log.h"
  16 #include "qemu/module.h"
  17 #include "cpu.h"
  18 #include "hw/hw.h"
  19 #include "exec/address-spaces.h"
  20 #include "exec/memory.h"
  21 #include "hw/ppc/ppc.h"
  22 #include "hw/pci/pci.h"
  23 #include "sysemu/block-backend.h"
  24 #include "ppc440.h"
  25
  26 /*****************************************************************************/
  27 /* L2 Cache as SRAM */
  28 /* FIXME:fix names */
  29 enum {
  30     DCR_L2CACHE_BASE  = 0x30,
  31     DCR_L2CACHE_CFG   = DCR_L2CACHE_BASE,
  32     DCR_L2CACHE_CMD,
  33     DCR_L2CACHE_ADDR,
  34     DCR_L2CACHE_DATA,
  35     DCR_L2CACHE_STAT,
  36     DCR_L2CACHE_CVER,
  37     DCR_L2CACHE_SNP0,
  38     DCR_L2CACHE_SNP1,
  39     DCR_L2CACHE_END   = DCR_L2CACHE_SNP1,
  40 };
  41
  42 /* base is 460ex-specific, cf. U-Boot, ppc4xx-isram.h */
  43 enum {
  44     DCR_ISRAM0_BASE   = 0x20,
  45     DCR_ISRAM0_SB0CR  = DCR_ISRAM0_BASE,
  46     DCR_ISRAM0_SB1CR,
  47     DCR_ISRAM0_SB2CR,
  48     DCR_ISRAM0_SB3CR,
  49     DCR_ISRAM0_BEAR,
  50     DCR_ISRAM0_BESR0,
  51     DCR_ISRAM0_BESR1,
  52     DCR_ISRAM0_PMEG,
  53     DCR_ISRAM0_CID,
  54     DCR_ISRAM0_REVID,
  55     DCR_ISRAM0_DPC,
  56     DCR_ISRAM0_END    = DCR_ISRAM0_DPC
  57 };
  58
  59 enum {
  60     DCR_ISRAM1_BASE   = 0xb0,
  61     DCR_ISRAM1_SB0CR  = DCR_ISRAM1_BASE,
  62     /* single bank */
  63     DCR_ISRAM1_BEAR   = DCR_ISRAM1_BASE + 0x04,
  64     DCR_ISRAM1_BESR0,
  65     DCR_ISRAM1_BESR1,
  66     DCR_ISRAM1_PMEG,
  67     DCR_ISRAM1_CID,
  68     DCR_ISRAM1_REVID,
  69     DCR_ISRAM1_DPC,
  70     DCR_ISRAM1_END    = DCR_ISRAM1_DPC
  71 };
  72
  73 typedef struct ppc4xx_l2sram_t {
  74     MemoryRegion bank[4];
  75     uint32_t l2cache[8];
  76     uint32_t isram0[11];
  77 } ppc4xx_l2sram_t;
  78
  79 #ifdef MAP_L2SRAM
  80 static void l2sram_update_mappings(ppc4xx_l2sram_t *l2sram,
  81                                    uint32_t isarc, uint32_t isacntl,
  82                                    uint32_t dsarc, uint32_t dsacntl)
  83 {
  84     if (l2sram->isarc != isarc ||
  85         (l2sram->isacntl & 0x80000000) != (isacntl & 0x80000000)) {
  86         if (l2sram->isacntl & 0x80000000) {
  87             /* Unmap previously assigned memory region */
  88             memory_region_del_subregion(get_system_memory(),
  89                                         &l2sram->isarc_ram);
  90         }
  91         if (isacntl & 0x80000000) {
  92             /* Map new instruction memory region */
  93             memory_region_add_subregion(get_system_memory(), isarc,
  94                                         &l2sram->isarc_ram);
  95         }
  96     }
  97     if (l2sram->dsarc != dsarc ||
  98         (l2sram->dsacntl & 0x80000000) != (dsacntl & 0x80000000)) {
  99         if (l2sram->dsacntl & 0x80000000) {
 100             /* Beware not to unmap the region we just mapped */
 101             if (!(isacntl & 0x80000000) || l2sram->dsarc != isarc) {
 102                 /* Unmap previously assigned memory region */
 103                 memory_region_del_subregion(get_system_memory(),
 104                                             &l2sram->dsarc_ram);
 105             }
 106         }
 107         if (dsacntl & 0x80000000) {
 108             /* Beware not to remap the region we just mapped */
 109             if (!(isacntl & 0x80000000) || dsarc != isarc) {
 110                 /* Map new data memory region */
 111                 memory_region_add_subregion(get_system_memory(), dsarc,
 112                                             &l2sram->dsarc_ram);
 113             }
 114         }
 115     }
 116 }
 117 #endif
 118
 119 static uint32_t dcr_read_l2sram(void *opaque, int dcrn)
 120 {
 121     ppc4xx_l2sram_t *l2sram = opaque;
 122     uint32_t ret = 0;
 123
 124     switch (dcrn) {
 125     case DCR_L2CACHE_CFG:
 126     case DCR_L2CACHE_CMD:
 127     case DCR_L2CACHE_ADDR:
 128     case DCR_L2CACHE_DATA:
 129     case DCR_L2CACHE_STAT:
 130     case DCR_L2CACHE_CVER:
 131     case DCR_L2CACHE_SNP0:
 132     case DCR_L2CACHE_SNP1:
 133         ret = l2sram->l2cache[dcrn - DCR_L2CACHE_BASE];
 134         break;
 135
 136     case DCR_ISRAM0_SB0CR:
 137     case DCR_ISRAM0_SB1CR:
 138     case DCR_ISRAM0_SB2CR:
 139     case DCR_ISRAM0_SB3CR:
 140     case DCR_ISRAM0_BEAR:
 141     case DCR_ISRAM0_BESR0:
 142     case DCR_ISRAM0_BESR1:
 143     case DCR_ISRAM0_PMEG:
 144     case DCR_ISRAM0_CID:
 145     case DCR_ISRAM0_REVID:
 146     case DCR_ISRAM0_DPC:
 147         ret = l2sram->isram0[dcrn - DCR_ISRAM0_BASE];
 148         break;
 149
 150     default:
 151         break;
 152     }
 153
 154     return ret;
 155 }
 156
 157 static void dcr_write_l2sram(void *opaque, int dcrn, uint32_t val)
 158 {
 159     /*ppc4xx_l2sram_t *l2sram = opaque;*/
 160     /* FIXME: Actually handle L2 cache mapping */
 161
 162     switch (dcrn) {
 163     case DCR_L2CACHE_CFG:
 164     case DCR_L2CACHE_CMD:
 165     case DCR_L2CACHE_ADDR:
 166     case DCR_L2CACHE_DATA:
 167     case DCR_L2CACHE_STAT:
 168     case DCR_L2CACHE_CVER:
 169     case DCR_L2CACHE_SNP0:
 170     case DCR_L2CACHE_SNP1:
 171         /*l2sram->l2cache[dcrn - DCR_L2CACHE_BASE] = val;*/
 172         break;
 173
 174     case DCR_ISRAM0_SB0CR:
 175     case DCR_ISRAM0_SB1CR:
 176     case DCR_ISRAM0_SB2CR:
 177     case DCR_ISRAM0_SB3CR:
 178     case DCR_ISRAM0_BEAR:
 179     case DCR_ISRAM0_BESR0:
 180     case DCR_ISRAM0_BESR1:
 181     case DCR_ISRAM0_PMEG:
 182     case DCR_ISRAM0_CID:
 183     case DCR_ISRAM0_REVID:
 184     case DCR_ISRAM0_DPC:
 185         /*l2sram->isram0[dcrn - DCR_L2CACHE_BASE] = val;*/
 186         break;
 187
 188     case DCR_ISRAM1_SB0CR:
 189     case DCR_ISRAM1_BEAR:
 190     case DCR_ISRAM1_BESR0:
 191     case DCR_ISRAM1_BESR1:
 192     case DCR_ISRAM1_PMEG:
 193     case DCR_ISRAM1_CID:
 194     case DCR_ISRAM1_REVID:
 195     case DCR_ISRAM1_DPC:
 196         /*l2sram->isram1[dcrn - DCR_L2CACHE_BASE] = val;*/
 197         break;
 198     }
 199     /*l2sram_update_mappings(l2sram, isarc, isacntl, dsarc, dsacntl);*/
 200 }
 201
 202 static void l2sram_reset(void *opaque)
 203 {
 204     ppc4xx_l2sram_t *l2sram = opaque;
 205
 206     memset(l2sram->l2cache, 0, sizeof(l2sram->l2cache));
 207     l2sram->l2cache[DCR_L2CACHE_STAT - DCR_L2CACHE_BASE] = 0x80000000;
 208     memset(l2sram->isram0, 0, sizeof(l2sram->isram0));
 209     /*l2sram_update_mappings(l2sram, isarc, isacntl, dsarc, dsacntl);*/
 210 }
 211
 212 void ppc4xx_l2sram_init(CPUPPCState *env)
 213 {
 214     ppc4xx_l2sram_t *l2sram;
 215
 216     l2sram = g_malloc0(sizeof(*l2sram));
 217     /* XXX: Size is 4*64kB for 460ex, cf. U-Boot, ppc4xx-isram.h */
 218     memory_region_init_ram(&l2sram->bank[0], NULL, "ppc4xx.l2sram_bank0",
 219                            64 * KiB, &error_abort);
 220     memory_region_init_ram(&l2sram->bank[1], NULL, "ppc4xx.l2sram_bank1",
 221                            64 * KiB, &error_abort);
 222     memory_region_init_ram(&l2sram->bank[2], NULL, "ppc4xx.l2sram_bank2",
 223                            64 * KiB, &error_abort);
 224     memory_region_init_ram(&l2sram->bank[3], NULL, "ppc4xx.l2sram_bank3",
 225                            64 * KiB, &error_abort);
 226     qemu_register_reset(&l2sram_reset, l2sram);
 227     ppc_dcr_register(env, DCR_L2CACHE_CFG,
 228                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 229     ppc_dcr_register(env, DCR_L2CACHE_CMD,
 230                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 231     ppc_dcr_register(env, DCR_L2CACHE_ADDR,
 232                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 233     ppc_dcr_register(env, DCR_L2CACHE_DATA,
 234                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 235     ppc_dcr_register(env, DCR_L2CACHE_STAT,
 236                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 237     ppc_dcr_register(env, DCR_L2CACHE_CVER,
 238                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 239     ppc_dcr_register(env, DCR_L2CACHE_SNP0,
 240                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 241     ppc_dcr_register(env, DCR_L2CACHE_SNP1,
 242                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 243
 244     ppc_dcr_register(env, DCR_ISRAM0_SB0CR,
 245                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 246     ppc_dcr_register(env, DCR_ISRAM0_SB1CR,
 247                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 248     ppc_dcr_register(env, DCR_ISRAM0_SB2CR,
 249                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 250     ppc_dcr_register(env, DCR_ISRAM0_SB3CR,
 251                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 252     ppc_dcr_register(env, DCR_ISRAM0_PMEG,
 253                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 254     ppc_dcr_register(env, DCR_ISRAM0_DPC,
 255                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 256
 257     ppc_dcr_register(env, DCR_ISRAM1_SB0CR,
 258                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 259     ppc_dcr_register(env, DCR_ISRAM1_PMEG,
 260                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 261     ppc_dcr_register(env, DCR_ISRAM1_DPC,
 262                      l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
 263 }
 264
 265 /*****************************************************************************/
 266 /* Clocking Power on Reset */
 267 enum {
 268     CPR0_CFGADDR = 0xC,
 269     CPR0_CFGDATA = 0xD,
 270
 271     CPR0_PLLD = 0x060,
 272     CPR0_PLBED = 0x080,
 273     CPR0_OPBD = 0x0C0,
 274     CPR0_PERD = 0x0E0,
 275     CPR0_AHBD = 0x100,
 276 };
 277
 278 typedef struct ppc4xx_cpr_t {
 279     uint32_t addr;
 280 } ppc4xx_cpr_t;
 281
 282 static uint32_t dcr_read_cpr(void *opaque, int dcrn)
 283 {
 284     ppc4xx_cpr_t *cpr = opaque;
 285     uint32_t ret = 0;
 286
 287     switch (dcrn) {
 288     case CPR0_CFGADDR:
 289         ret = cpr->addr;
 290         break;
 291     case CPR0_CFGDATA:
 292         switch (cpr->addr) {
 293         case CPR0_PLLD:
 294             ret = (0xb5 << 24) | (1 << 16) | (9 << 8);
 295             break;
 296         case CPR0_PLBED:
 297             ret = (5 << 24);
 298             break;
 299         case CPR0_OPBD:
 300             ret = (2 << 24);
 301             break;
 302         case CPR0_PERD:
 303         case CPR0_AHBD:
 304             ret = (1 << 24);
 305             break;
 306         default:
 307             break;
 308         }
 309         break;
 310     default:
 311         break;
 312     }
 313
 314     return ret;
 315 }
 316
 317 static void dcr_write_cpr(void *opaque, int dcrn, uint32_t val)
 318 {
 319     ppc4xx_cpr_t *cpr = opaque;
 320
 321     switch (dcrn) {
 322     case CPR0_CFGADDR:
 323         cpr->addr = val;
 324         break;
 325     case CPR0_CFGDATA:
 326         break;
 327     default:
 328         break;
 329     }
 330 }
 331
 332 static void ppc4xx_cpr_reset(void *opaque)
 333 {
 334     ppc4xx_cpr_t *cpr = opaque;
 335
 336     cpr->addr = 0;
 337 }
 338
 339 void ppc4xx_cpr_init(CPUPPCState *env)
 340 {
 341     ppc4xx_cpr_t *cpr;
 342
 343     cpr = g_malloc0(sizeof(*cpr));
 344     ppc_dcr_register(env, CPR0_CFGADDR, cpr, &dcr_read_cpr, &dcr_write_cpr);
 345     ppc_dcr_register(env, CPR0_CFGDATA, cpr, &dcr_read_cpr, &dcr_write_cpr);
 346     qemu_register_reset(ppc4xx_cpr_reset, cpr);
 347 }
 348
 349 /*****************************************************************************/
 350 /* System DCRs */
 351 typedef struct ppc4xx_sdr_t ppc4xx_sdr_t;
 352 struct ppc4xx_sdr_t {
 353     uint32_t addr;
 354 };
 355
 356 enum {
 357     SDR0_CFGADDR = 0x00e,
 358     SDR0_CFGDATA,
 359     SDR0_STRP0 = 0x020,
 360     SDR0_STRP1,
 361     SDR0_102 = 0x66,
 362     SDR0_103,
 363     SDR0_128 = 0x80,
 364     SDR0_ECID3 = 0x083,
 365     SDR0_DDR0 = 0x0e1,
 366     SDR0_USB0 = 0x320,
 367 };
 368
 369 enum {
 370     PESDR0_LOOP = 0x303,
 371     PESDR0_RCSSET,
 372     PESDR0_RCSSTS,
 373     PESDR0_RSTSTA = 0x310,
 374     PESDR1_LOOP = 0x343,
 375     PESDR1_RCSSET,
 376     PESDR1_RCSSTS,
 377     PESDR1_RSTSTA = 0x365,
 378 };
 379
 380 #define SDR0_DDR0_DDRM_ENCODE(n)  ((((unsigned long)(n)) & 0x03) << 29)
 381 #define SDR0_DDR0_DDRM_DDR1       0x20000000
 382 #define SDR0_DDR0_DDRM_DDR2       0x40000000
 383
 384 static uint32_t dcr_read_sdr(void *opaque, int dcrn)
 385 {
 386     ppc4xx_sdr_t *sdr = opaque;
 387     uint32_t ret = 0;
 388
 389     switch (dcrn) {
 390     case SDR0_CFGADDR:
 391         ret = sdr->addr;
 392         break;
 393     case SDR0_CFGDATA:
 394         switch (sdr->addr) {
 395         case SDR0_STRP0:
 396             ret = (0xb5 << 8) | (1 << 4) | 9;
 397             break;
 398         case SDR0_STRP1:
 399             ret = (5 << 29) | (2 << 26) | (1 << 24);
 400             break;
 401         case SDR0_ECID3:
 402             ret = 1 << 20; /* No Security/Kasumi support */
 403             break;
 404         case SDR0_DDR0:
 405             ret = SDR0_DDR0_DDRM_ENCODE(1) | SDR0_DDR0_DDRM_DDR1;
 406             break;
 407         case PESDR0_RCSSET:
 408         case PESDR1_RCSSET:
 409             ret = (1 << 24) | (1 << 16);
 410             break;
 411         case PESDR0_RCSSTS:
 412         case PESDR1_RCSSTS:
 413             ret = (1 << 16) | (1 << 12);
 414             break;
 415         case PESDR0_RSTSTA:
 416         case PESDR1_RSTSTA:
 417             ret = 1;
 418             break;
 419         case PESDR0_LOOP:
 420         case PESDR1_LOOP:
 421             ret = 1 << 12;
 422             break;
 423         default:
 424             break;
 425         }
 426         break;
 427     default:
 428         break;
 429     }
 430
 431     return ret;
 432 }
 433
 434 static void dcr_write_sdr(void *opaque, int dcrn, uint32_t val)
 435 {
 436     ppc4xx_sdr_t *sdr = opaque;
 437
 438     switch (dcrn) {
 439     case SDR0_CFGADDR:
 440         sdr->addr = val;
 441         break;
 442     case SDR0_CFGDATA:
 443         switch (sdr->addr) {
 444         case 0x00: /* B0CR */
 445             break;
 446         default:
 447             break;
 448         }
 449         break;
 450     default:
 451         break;
 452     }
 453 }
 454
 455 static void sdr_reset(void *opaque)
 456 {
 457     ppc4xx_sdr_t *sdr = opaque;
 458
 459     sdr->addr = 0;
 460 }
 461
 462 void ppc4xx_sdr_init(CPUPPCState *env)
 463 {
 464     ppc4xx_sdr_t *sdr;
 465
 466     sdr = g_malloc0(sizeof(*sdr));
 467     qemu_register_reset(&sdr_reset, sdr);
 468     ppc_dcr_register(env, SDR0_CFGADDR,
 469                      sdr, &dcr_read_sdr, &dcr_write_sdr);
 470     ppc_dcr_register(env, SDR0_CFGDATA,
 471                      sdr, &dcr_read_sdr, &dcr_write_sdr);
 472     ppc_dcr_register(env, SDR0_102,
 473                      sdr, &dcr_read_sdr, &dcr_write_sdr);
 474     ppc_dcr_register(env, SDR0_103,
 475                      sdr, &dcr_read_sdr, &dcr_write_sdr);
 476     ppc_dcr_register(env, SDR0_128,
 477                      sdr, &dcr_read_sdr, &dcr_write_sdr);
 478     ppc_dcr_register(env, SDR0_USB0,
 479                      sdr, &dcr_read_sdr, &dcr_write_sdr);
 480 }
 481
 482 /*****************************************************************************/
 483 /* SDRAM controller */
 484 typedef struct ppc440_sdram_t {
 485     uint32_t addr;
 486     int nbanks;
 487     MemoryRegion containers[4]; /* used for clipping */
 488     MemoryRegion *ram_memories;
 489     hwaddr ram_bases[4];
 490     hwaddr ram_sizes[4];
 491     uint32_t bcr[4];
 492 } ppc440_sdram_t;
 493
 494 enum {
 495     SDRAM0_CFGADDR = 0x10,
 496     SDRAM0_CFGDATA,
 497     SDRAM_R0BAS = 0x40,
 498     SDRAM_R1BAS,
 499     SDRAM_R2BAS,
 500     SDRAM_R3BAS,
 501     SDRAM_CONF1HB = 0x45,
 502     SDRAM_PLBADDULL = 0x4a,
 503     SDRAM_CONF1LL = 0x4b,
 504     SDRAM_CONFPATHB = 0x4f,
 505     SDRAM_PLBADDUHB = 0x50,
 506 };
 507
 508 static uint32_t sdram_bcr(hwaddr ram_base, hwaddr ram_size)
 509 {
 510     uint32_t bcr;
 511
 512     switch (ram_size) {
 513     case (8 * MiB):
 514         bcr = 0xffc0;
 515         break;
 516     case (16 * MiB):
 517         bcr = 0xff80;
 518         break;
 519     case (32 * MiB):
 520         bcr = 0xff00;
 521         break;
 522     case (64 * MiB):
 523         bcr = 0xfe00;
 524         break;
 525     case (128 * MiB):
 526         bcr = 0xfc00;
 527         break;
 528     case (256 * MiB):
 529         bcr = 0xf800;
 530         break;
 531     case (512 * MiB):
 532         bcr = 0xf000;
 533         break;
 534     case (1 * GiB):
 535         bcr = 0xe000;
 536         break;
 537     case (2 * GiB):
 538         bcr = 0xc000;
 539         break;
 540     case (4 * GiB):
 541         bcr = 0x8000;
 542         break;
 543     default:
 544         error_report("invalid RAM size " TARGET_FMT_plx, ram_size);
 545         return 0;
 546     }
 547     bcr |= ram_base >> 2 & 0xffe00000;
 548     bcr |= 1;
 549
 550     return bcr;
 551 }
 552
 553 static inline hwaddr sdram_base(uint32_t bcr)
 554 {
 555     return (bcr & 0xffe00000) << 2;
 556 }
 557
 558 static uint64_t sdram_size(uint32_t bcr)
 559 {
 560     uint64_t size;
 561     int sh;
 562
 563     sh = 1024 - ((bcr >> 6) & 0x3ff);
 564     size = 8 * MiB * sh;
 565
 566     return size;
 567 }
 568
 569 static void sdram_set_bcr(ppc440_sdram_t *sdram, int i,
 570                           uint32_t bcr, int enabled)
 571 {
 572     if (sdram->bcr[i] & 1) {
 573         /* First unmap RAM if enabled */
 574         memory_region_del_subregion(get_system_memory(),
 575                                     &sdram->containers[i]);
 576         memory_region_del_subregion(&sdram->containers[i],
 577                                     &sdram->ram_memories[i]);
 578         object_unparent(OBJECT(&sdram->containers[i]));
 579     }
 580     sdram->bcr[i] = bcr & 0xffe0ffc1;
 581     if (enabled && (bcr & 1)) {
 582         memory_region_init(&sdram->containers[i], NULL, "sdram-containers",
 583                            sdram_size(bcr));
 584         memory_region_add_subregion(&sdram->containers[i], 0,
 585                                     &sdram->ram_memories[i]);
 586         memory_region_add_subregion(get_system_memory(),
 587                                     sdram_base(bcr),
 588                                     &sdram->containers[i]);
 589     }
 590 }
 591
 592 static void sdram_map_bcr(ppc440_sdram_t *sdram)
 593 {
 594     int i;
 595
 596     for (i = 0; i < sdram->nbanks; i++) {
 597         if (sdram->ram_sizes[i] != 0) {
 598             sdram_set_bcr(sdram, i, sdram_bcr(sdram->ram_bases[i],
 599                                               sdram->ram_sizes[i]), 1);
 600         } else {
 601             sdram_set_bcr(sdram, i, 0, 0);
 602         }
 603     }
 604 }
 605
 606 static uint32_t dcr_read_sdram(void *opaque, int dcrn)
 607 {
 608     ppc440_sdram_t *sdram = opaque;
 609     uint32_t ret = 0;
 610
 611     switch (dcrn) {
 612     case SDRAM_R0BAS:
 613     case SDRAM_R1BAS:
 614     case SDRAM_R2BAS:
 615     case SDRAM_R3BAS:
 616         if (sdram->ram_sizes[dcrn - SDRAM_R0BAS]) {
 617             ret = sdram_bcr(sdram->ram_bases[dcrn - SDRAM_R0BAS],
 618                             sdram->ram_sizes[dcrn - SDRAM_R0BAS]);
 619         }
 620         break;
 621     case SDRAM_CONF1HB:
 622     case SDRAM_CONF1LL:
 623     case SDRAM_CONFPATHB:
 624     case SDRAM_PLBADDULL:
 625     case SDRAM_PLBADDUHB:
 626         break;
 627     case SDRAM0_CFGADDR:
 628         ret = sdram->addr;
 629         break;
 630     case SDRAM0_CFGDATA:
 631         switch (sdram->addr) {
 632         case 0x14: /* SDRAM_MCSTAT (405EX) */
 633         case 0x1F:
 634             ret = 0x80000000;
 635             break;
 636         case 0x21: /* SDRAM_MCOPT2 */
 637             ret = 0x08000000;
 638             break;
 639         case 0x40: /* SDRAM_MB0CF */
 640             ret = 0x00008001;
 641             break;
 642         case 0x7A: /* SDRAM_DLCR */
 643             ret = 0x02000000;
 644             break;
 645         case 0xE1: /* SDR0_DDR0 */
 646             ret = SDR0_DDR0_DDRM_ENCODE(1) | SDR0_DDR0_DDRM_DDR1;
 647             break;
 648         default:
 649             break;
 650         }
 651         break;
 652     default:
 653         break;
 654     }
 655
 656     return ret;
 657 }
 658
 659 static void dcr_write_sdram(void *opaque, int dcrn, uint32_t val)
 660 {
 661     ppc440_sdram_t *sdram = opaque;
 662
 663     switch (dcrn) {
 664     case SDRAM_R0BAS:
 665     case SDRAM_R1BAS:
 666     case SDRAM_R2BAS:
 667     case SDRAM_R3BAS:
 668     case SDRAM_CONF1HB:
 669     case SDRAM_CONF1LL:
 670     case SDRAM_CONFPATHB:
 671     case SDRAM_PLBADDULL:
 672     case SDRAM_PLBADDUHB:
 673         break;
 674     case SDRAM0_CFGADDR:
 675         sdram->addr = val;
 676         break;
 677     case SDRAM0_CFGDATA:
 678         switch (sdram->addr) {
 679         case 0x00: /* B0CR */
 680             break;
 681         default:
 682             break;
 683         }
 684         break;
 685     default:
 686         break;
 687     }
 688 }
 689
 690 static void sdram_reset(void *opaque)
 691 {
 692     ppc440_sdram_t *sdram = opaque;
 693
 694     sdram->addr = 0;
 695 }
 696
 697 void ppc440_sdram_init(CPUPPCState *env, int nbanks,
 698                        MemoryRegion *ram_memories,
 699                        hwaddr *ram_bases, hwaddr *ram_sizes,
 700                        int do_init)
 701 {
 702     ppc440_sdram_t *sdram;
 703
 704     sdram = g_malloc0(sizeof(*sdram));
 705     sdram->nbanks = nbanks;
 706     sdram->ram_memories = ram_memories;
 707     memcpy(sdram->ram_bases, ram_bases, nbanks * sizeof(hwaddr));
 708     memcpy(sdram->ram_sizes, ram_sizes, nbanks * sizeof(hwaddr));
 709     qemu_register_reset(&sdram_reset, sdram);
 710     ppc_dcr_register(env, SDRAM0_CFGADDR,
 711                      sdram, &dcr_read_sdram, &dcr_write_sdram);
 712     ppc_dcr_register(env, SDRAM0_CFGDATA,
 713                      sdram, &dcr_read_sdram, &dcr_write_sdram);
 714     if (do_init) {
 715         sdram_map_bcr(sdram);
 716     }
 717
 718     ppc_dcr_register(env, SDRAM_R0BAS,
 719                      sdram, &dcr_read_sdram, &dcr_write_sdram);
 720     ppc_dcr_register(env, SDRAM_R1BAS,
 721                      sdram, &dcr_read_sdram, &dcr_write_sdram);
 722     ppc_dcr_register(env, SDRAM_R2BAS,
 723                      sdram, &dcr_read_sdram, &dcr_write_sdram);
 724     ppc_dcr_register(env, SDRAM_R3BAS,
 725                      sdram, &dcr_read_sdram, &dcr_write_sdram);
 726     ppc_dcr_register(env, SDRAM_CONF1HB,
 727                      sdram, &dcr_read_sdram, &dcr_write_sdram);
 728     ppc_dcr_register(env, SDRAM_PLBADDULL,
 729                      sdram, &dcr_read_sdram, &dcr_write_sdram);
 730     ppc_dcr_register(env, SDRAM_CONF1LL,
 731                      sdram, &dcr_read_sdram, &dcr_write_sdram);
 732     ppc_dcr_register(env, SDRAM_CONFPATHB,
 733                      sdram, &dcr_read_sdram, &dcr_write_sdram);
 734     ppc_dcr_register(env, SDRAM_PLBADDUHB,
 735                      sdram, &dcr_read_sdram, &dcr_write_sdram);
 736 }
 737
 738 /*****************************************************************************/
 739 /* PLB to AHB bridge */
 740 enum {
 741     AHB_TOP    = 0xA4,
 742     AHB_BOT    = 0xA5,
 743 };
 744
 745 typedef struct ppc4xx_ahb_t {
 746     uint32_t top;
 747     uint32_t bot;
 748 } ppc4xx_ahb_t;
 749
 750 static uint32_t dcr_read_ahb(void *opaque, int dcrn)
 751 {
 752     ppc4xx_ahb_t *ahb = opaque;
 753     uint32_t ret = 0;
 754
 755     switch (dcrn) {
 756     case AHB_TOP:
 757         ret = ahb->top;
 758         break;
 759     case AHB_BOT:
 760         ret = ahb->bot;
 761         break;
 762     default:
 763         break;
 764     }
 765
 766     return ret;
 767 }
 768
 769 static void dcr_write_ahb(void *opaque, int dcrn, uint32_t val)
 770 {
 771     ppc4xx_ahb_t *ahb = opaque;
 772
 773     switch (dcrn) {
 774     case AHB_TOP:
 775         ahb->top = val;
 776         break;
 777     case AHB_BOT:
 778         ahb->bot = val;
 779         break;
 780     }
 781 }
 782
 783 static void ppc4xx_ahb_reset(void *opaque)
 784 {
 785     ppc4xx_ahb_t *ahb = opaque;
 786
 787     /* No error */
 788     ahb->top = 0;
 789     ahb->bot = 0;
 790 }
 791
 792 void ppc4xx_ahb_init(CPUPPCState *env)
 793 {
 794     ppc4xx_ahb_t *ahb;
 795
 796     ahb = g_malloc0(sizeof(*ahb));
 797     ppc_dcr_register(env, AHB_TOP, ahb, &dcr_read_ahb, &dcr_write_ahb);
 798     ppc_dcr_register(env, AHB_BOT, ahb, &dcr_read_ahb, &dcr_write_ahb);
 799     qemu_register_reset(ppc4xx_ahb_reset, ahb);
 800 }
 801
 802 /*****************************************************************************/
 803 /* DMA controller */
 804
 805 #define DMA0_CR_CE  (1 << 31)
 806 #define DMA0_CR_PW  (1 << 26 | 1 << 25)
 807 #define DMA0_CR_DAI (1 << 24)
 808 #define DMA0_CR_SAI (1 << 23)
 809 #define DMA0_CR_DEC (1 << 2)
 810
 811 enum {
 812     DMA0_CR  = 0x00,
 813     DMA0_CT,
 814     DMA0_SAH,
 815     DMA0_SAL,
 816     DMA0_DAH,
 817     DMA0_DAL,
 818     DMA0_SGH,
 819     DMA0_SGL,
 820
 821     DMA0_SR  = 0x20,
 822     DMA0_SGC = 0x23,
 823     DMA0_SLP = 0x25,
 824     DMA0_POL = 0x26,
 825 };
 826
 827 typedef struct {
 828     uint32_t cr;
 829     uint32_t ct;
 830     uint64_t sa;
 831     uint64_t da;
 832     uint64_t sg;
 833 } PPC4xxDmaChnl;
 834
 835 typedef struct {
 836     int base;
 837     PPC4xxDmaChnl ch[4];
 838     uint32_t sr;
 839 } PPC4xxDmaState;
 840
 841 static uint32_t dcr_read_dma(void *opaque, int dcrn)
 842 {
 843     PPC4xxDmaState *dma = opaque;
 844     uint32_t val = 0;
 845     int addr = dcrn - dma->base;
 846     int chnl = addr / 8;
 847
 848     switch (addr) {
 849     case 0x00 ... 0x1f:
 850         switch (addr % 8) {
 851         case DMA0_CR:
 852             val = dma->ch[chnl].cr;
 853             break;
 854         case DMA0_CT:
 855             val = dma->ch[chnl].ct;
 856             break;
 857         case DMA0_SAH:
 858             val = dma->ch[chnl].sa >> 32;
 859             break;
 860         case DMA0_SAL:
 861             val = dma->ch[chnl].sa;
 862             break;
 863         case DMA0_DAH:
 864             val = dma->ch[chnl].da >> 32;
 865             break;
 866         case DMA0_DAL:
 867             val = dma->ch[chnl].da;
 868             break;
 869         case DMA0_SGH:
 870             val = dma->ch[chnl].sg >> 32;
 871             break;
 872         case DMA0_SGL:
 873             val = dma->ch[chnl].sg;
 874             break;
 875         }
 876         break;
 877     case DMA0_SR:
 878         val = dma->sr;
 879         break;
 880     default:
 881         qemu_log_mask(LOG_UNIMP, "%s: unimplemented register %x (%d, %x)\n",
 882                       __func__, dcrn, chnl, addr);
 883     }
 884
 885     return val;
 886 }
 887
 888 static void dcr_write_dma(void *opaque, int dcrn, uint32_t val)
 889 {
 890     PPC4xxDmaState *dma = opaque;
 891     int addr = dcrn - dma->base;
 892     int chnl = addr / 8;
 893
 894     switch (addr) {
 895     case 0x00 ... 0x1f:
 896         switch (addr % 8) {
 897         case DMA0_CR:
 898             dma->ch[chnl].cr = val;
 899             if (val & DMA0_CR_CE) {
 900                 int count = dma->ch[chnl].ct & 0xffff;
 901
 902                 if (count) {
 903                     int width, i, sidx, didx;
 904                     uint8_t *rptr, *wptr;
 905                     hwaddr rlen, wlen;
 906
 907                     sidx = didx = 0;
 908                     width = 1 << ((val & DMA0_CR_PW) >> 25);
 909                     rptr = cpu_physical_memory_map(dma->ch[chnl].sa, &rlen, 0);
 910                     wptr = cpu_physical_memory_map(dma->ch[chnl].da, &wlen, 1);
 911                     if (rptr && wptr) {
 912                         if (!(val & DMA0_CR_DEC) &&
 913                             val & DMA0_CR_SAI && val & DMA0_CR_DAI) {
 914                             /* optimise common case */
 915                             memmove(wptr, rptr, count * width);
 916                             sidx = didx = count * width;
 917                         } else {
 918                             /* do it the slow way */
 919                             for (sidx = didx = i = 0; i < count; i++) {
 920                                 uint64_t v = ldn_le_p(rptr + sidx, width);
 921                                 stn_le_p(wptr + didx, width, v);
 922                                 if (val & DMA0_CR_SAI) {
 923                                     sidx += width;
 924                                 }
 925                                 if (val & DMA0_CR_DAI) {
 926                                     didx += width;
 927                                 }
 928                             }
 929                         }
 930                     }
 931                     if (wptr) {
 932                         cpu_physical_memory_unmap(wptr, wlen, 1, didx);
 933                     }
 934                     if (rptr) {
 935                         cpu_physical_memory_unmap(rptr, rlen, 0, sidx);
 936                     }
 937                 }
 938             }
 939             break;
 940         case DMA0_CT:
 941             dma->ch[chnl].ct = val;
 942             break;
 943         case DMA0_SAH:
 944             dma->ch[chnl].sa &= 0xffffffffULL;
 945             dma->ch[chnl].sa |= (uint64_t)val << 32;
 946             break;
 947         case DMA0_SAL:
 948             dma->ch[chnl].sa &= 0xffffffff00000000ULL;
 949             dma->ch[chnl].sa |= val;
 950             break;
 951         case DMA0_DAH:
 952             dma->ch[chnl].da &= 0xffffffffULL;
 953             dma->ch[chnl].da |= (uint64_t)val << 32;
 954             break;
 955         case DMA0_DAL:
 956             dma->ch[chnl].da &= 0xffffffff00000000ULL;
 957             dma->ch[chnl].da |= val;
 958             break;
 959         case DMA0_SGH:
 960             dma->ch[chnl].sg &= 0xffffffffULL;
 961             dma->ch[chnl].sg |= (uint64_t)val << 32;
 962             break;
 963         case DMA0_SGL:
 964             dma->ch[chnl].sg &= 0xffffffff00000000ULL;
 965             dma->ch[chnl].sg |= val;
 966             break;
 967         }
 968         break;
 969     case DMA0_SR:
 970         dma->sr &= ~val;
 971         break;
 972     default:
 973         qemu_log_mask(LOG_UNIMP, "%s: unimplemented register %x (%d, %x)\n",
 974                       __func__, dcrn, chnl, addr);
 975     }
 976 }
 977
 978 static void ppc4xx_dma_reset(void *opaque)
 979 {
 980     PPC4xxDmaState *dma = opaque;
 981     int dma_base = dma->base;
 982
 983     memset(dma, 0, sizeof(*dma));
 984     dma->base = dma_base;
 985 }
 986
 987 void ppc4xx_dma_init(CPUPPCState *env, int dcr_base)
 988 {
 989     PPC4xxDmaState *dma;
 990     int i;
 991
 992     dma = g_malloc0(sizeof(*dma));
 993     dma->base = dcr_base;
 994     qemu_register_reset(&ppc4xx_dma_reset, dma);
 995     for (i = 0; i < 4; i++) {
 996         ppc_dcr_register(env, dcr_base + i * 8 + DMA0_CR,
 997                          dma, &dcr_read_dma, &dcr_write_dma);
 998         ppc_dcr_register(env, dcr_base + i * 8 + DMA0_CT,
 999                          dma, &dcr_read_dma, &dcr_write_dma);
1000         ppc_dcr_register(env, dcr_base + i * 8 + DMA0_SAH,
1001                          dma, &dcr_read_dma, &dcr_write_dma);
1002         ppc_dcr_register(env, dcr_base + i * 8 + DMA0_SAL,
1003                          dma, &dcr_read_dma, &dcr_write_dma);
1004         ppc_dcr_register(env, dcr_base + i * 8 + DMA0_DAH,
1005                          dma, &dcr_read_dma, &dcr_write_dma);
1006         ppc_dcr_register(env, dcr_base + i * 8 + DMA0_DAL,
1007                          dma, &dcr_read_dma, &dcr_write_dma);
1008         ppc_dcr_register(env, dcr_base + i * 8 + DMA0_SGH,
1009                          dma, &dcr_read_dma, &dcr_write_dma);
1010         ppc_dcr_register(env, dcr_base + i * 8 + DMA0_SGL,
1011                          dma, &dcr_read_dma, &dcr_write_dma);
1012     }
1013     ppc_dcr_register(env, dcr_base + DMA0_SR,
1014                      dma, &dcr_read_dma, &dcr_write_dma);
1015     ppc_dcr_register(env, dcr_base + DMA0_SGC,
1016                      dma, &dcr_read_dma, &dcr_write_dma);
1017     ppc_dcr_register(env, dcr_base + DMA0_SLP,
1018                      dma, &dcr_read_dma, &dcr_write_dma);
1019     ppc_dcr_register(env, dcr_base + DMA0_POL,
1020                      dma, &dcr_read_dma, &dcr_write_dma);
1021 }
1022
1023 /*****************************************************************************/
1024 /* PCI Express controller */
1025 /* FIXME: This is not complete and does not work, only implemented partially
1026  * to allow firmware and guests to find an empty bus. Cards should use PCI.
1027  */
1028 #include "hw/pci/pcie_host.h"
1029
1030 #define TYPE_PPC460EX_PCIE_HOST "ppc460ex-pcie-host"
1031 #define PPC460EX_PCIE_HOST(obj) \
1032     OBJECT_CHECK(PPC460EXPCIEState, (obj), TYPE_PPC460EX_PCIE_HOST)
1033
1034 typedef struct PPC460EXPCIEState {
1035     PCIExpressHost host;
1036
1037     MemoryRegion iomem;
1038     qemu_irq irq[4];
1039     int32_t dcrn_base;
1040
1041     uint64_t cfg_base;
1042     uint32_t cfg_mask;
1043     uint64_t msg_base;
1044     uint32_t msg_mask;
1045     uint64_t omr1_base;
1046     uint64_t omr1_mask;
1047     uint64_t omr2_base;
1048     uint64_t omr2_mask;
1049     uint64_t omr3_base;
1050     uint64_t omr3_mask;
1051     uint64_t reg_base;
1052     uint32_t reg_mask;
1053     uint32_t special;
1054     uint32_t cfg;
1055 } PPC460EXPCIEState;
1056
1057 #define DCRN_PCIE0_BASE 0x100
1058 #define DCRN_PCIE1_BASE 0x120
1059
1060 enum {
1061     PEGPL_CFGBAH = 0x0,
1062     PEGPL_CFGBAL,
1063     PEGPL_CFGMSK,
1064     PEGPL_MSGBAH,
1065     PEGPL_MSGBAL,
1066     PEGPL_MSGMSK,
1067     PEGPL_OMR1BAH,
1068     PEGPL_OMR1BAL,
1069     PEGPL_OMR1MSKH,
1070     PEGPL_OMR1MSKL,
1071     PEGPL_OMR2BAH,
1072     PEGPL_OMR2BAL,
1073     PEGPL_OMR2MSKH,
1074     PEGPL_OMR2MSKL,
1075     PEGPL_OMR3BAH,
1076     PEGPL_OMR3BAL,
1077     PEGPL_OMR3MSKH,
1078     PEGPL_OMR3MSKL,
1079     PEGPL_REGBAH,
1080     PEGPL_REGBAL,
1081     PEGPL_REGMSK,
1082     PEGPL_SPECIAL,
1083     PEGPL_CFG,
1084 };
1085
1086 static uint32_t dcr_read_pcie(void *opaque, int dcrn)
1087 {
1088     PPC460EXPCIEState *state = opaque;
1089     uint32_t ret = 0;
1090
1091     switch (dcrn - state->dcrn_base) {
1092     case PEGPL_CFGBAH:
1093         ret = state->cfg_base >> 32;
1094         break;
1095     case PEGPL_CFGBAL:
1096         ret = state->cfg_base;
1097         break;
1098     case PEGPL_CFGMSK:
1099         ret = state->cfg_mask;
1100         break;
1101     case PEGPL_MSGBAH:
1102         ret = state->msg_base >> 32;
1103         break;
1104     case PEGPL_MSGBAL:
1105         ret = state->msg_base;
1106         break;
1107     case PEGPL_MSGMSK:
1108         ret = state->msg_mask;
1109         break;
1110     case PEGPL_OMR1BAH:
1111         ret = state->omr1_base >> 32;
1112         break;
1113     case PEGPL_OMR1BAL:
1114         ret = state->omr1_base;
1115         break;
1116     case PEGPL_OMR1MSKH:
1117         ret = state->omr1_mask >> 32;
1118         break;
1119     case PEGPL_OMR1MSKL:
1120         ret = state->omr1_mask;
1121         break;
1122     case PEGPL_OMR2BAH:
1123         ret = state->omr2_base >> 32;
1124         break;
1125     case PEGPL_OMR2BAL:
1126         ret = state->omr2_base;
1127         break;
1128     case PEGPL_OMR2MSKH:
1129         ret = state->omr2_mask >> 32;
1130         break;
1131     case PEGPL_OMR2MSKL:
1132         ret = state->omr3_mask;
1133         break;
1134     case PEGPL_OMR3BAH:
1135         ret = state->omr3_base >> 32;
1136         break;
1137     case PEGPL_OMR3BAL:
1138         ret = state->omr3_base;
1139         break;
1140     case PEGPL_OMR3MSKH:
1141         ret = state->omr3_mask >> 32;
1142         break;
1143     case PEGPL_OMR3MSKL:
1144         ret = state->omr3_mask;
1145         break;
1146     case PEGPL_REGBAH:
1147         ret = state->reg_base >> 32;
1148         break;
1149     case PEGPL_REGBAL:
1150         ret = state->reg_base;
1151         break;
1152     case PEGPL_REGMSK:
1153         ret = state->reg_mask;
1154         break;
1155     case PEGPL_SPECIAL:
1156         ret = state->special;
1157         break;
1158     case PEGPL_CFG:
1159         ret = state->cfg;
1160         break;
1161     }
1162
1163     return ret;
1164 }
1165
1166 static void dcr_write_pcie(void *opaque, int dcrn, uint32_t val)
1167 {
1168     PPC460EXPCIEState *s = opaque;
1169     uint64_t size;
1170
1171     switch (dcrn - s->dcrn_base) {
1172     case PEGPL_CFGBAH:
1173         s->cfg_base = ((uint64_t)val << 32) | (s->cfg_base & 0xffffffff);
1174         break;
1175     case PEGPL_CFGBAL:
1176         s->cfg_base = (s->cfg_base & 0xffffffff00000000ULL) | val;
1177         break;
1178     case PEGPL_CFGMSK:
1179         s->cfg_mask = val;
1180         size = ~(val & 0xfffffffe) + 1;
1181         qemu_mutex_lock_iothread();
1182         pcie_host_mmcfg_update(PCIE_HOST_BRIDGE(s), val & 1, s->cfg_base, size);
1183         qemu_mutex_unlock_iothread();
1184         break;
1185     case PEGPL_MSGBAH:
1186         s->msg_base = ((uint64_t)val << 32) | (s->msg_base & 0xffffffff);
1187         break;
1188     case PEGPL_MSGBAL:
1189         s->msg_base = (s->msg_base & 0xffffffff00000000ULL) | val;
1190         break;
1191     case PEGPL_MSGMSK:
1192         s->msg_mask = val;
1193         break;
1194     case PEGPL_OMR1BAH:
1195         s->omr1_base = ((uint64_t)val << 32) | (s->omr1_base & 0xffffffff);
1196         break;
1197     case PEGPL_OMR1BAL:
1198         s->omr1_base = (s->omr1_base & 0xffffffff00000000ULL) | val;
1199         break;
1200     case PEGPL_OMR1MSKH:
1201         s->omr1_mask = ((uint64_t)val << 32) | (s->omr1_mask & 0xffffffff);
1202         break;
1203     case PEGPL_OMR1MSKL:
1204         s->omr1_mask = (s->omr1_mask & 0xffffffff00000000ULL) | val;
1205         break;
1206     case PEGPL_OMR2BAH:
1207         s->omr2_base = ((uint64_t)val << 32) | (s->omr2_base & 0xffffffff);
1208         break;
1209     case PEGPL_OMR2BAL:
1210         s->omr2_base = (s->omr2_base & 0xffffffff00000000ULL) | val;
1211         break;
1212     case PEGPL_OMR2MSKH:
1213         s->omr2_mask = ((uint64_t)val << 32) | (s->omr2_mask & 0xffffffff);
1214         break;
1215     case PEGPL_OMR2MSKL:
1216         s->omr2_mask = (s->omr2_mask & 0xffffffff00000000ULL) | val;
1217         break;
1218     case PEGPL_OMR3BAH:
1219         s->omr3_base = ((uint64_t)val << 32) | (s->omr3_base & 0xffffffff);
1220         break;
1221     case PEGPL_OMR3BAL:
1222         s->omr3_base = (s->omr3_base & 0xffffffff00000000ULL) | val;
1223         break;
1224     case PEGPL_OMR3MSKH:
1225         s->omr3_mask = ((uint64_t)val << 32) | (s->omr3_mask & 0xffffffff);
1226         break;
1227     case PEGPL_OMR3MSKL:
1228         s->omr3_mask = (s->omr3_mask & 0xffffffff00000000ULL) | val;
1229         break;
1230     case PEGPL_REGBAH:
1231         s->reg_base = ((uint64_t)val << 32) | (s->reg_base & 0xffffffff);
1232         break;
1233     case PEGPL_REGBAL:
1234         s->reg_base = (s->reg_base & 0xffffffff00000000ULL) | val;
1235         break;
1236     case PEGPL_REGMSK:
1237         s->reg_mask = val;
1238         /* FIXME: how is size encoded? */
1239         size = (val == 0x7001 ? 4096 : ~(val & 0xfffffffe) + 1);
1240         break;
1241     case PEGPL_SPECIAL:
1242         s->special = val;
1243         break;
1244     case PEGPL_CFG:
1245         s->cfg = val;
1246         break;
1247     }
1248 }
1249
1250 static void ppc460ex_set_irq(void *opaque, int irq_num, int level)
1251 {
1252        PPC460EXPCIEState *s = opaque;
1253        qemu_set_irq(s->irq[irq_num], level);
1254 }
1255
1256 static void ppc460ex_pcie_realize(DeviceState *dev, Error **errp)
1257 {
1258     PPC460EXPCIEState *s = PPC460EX_PCIE_HOST(dev);
1259     PCIHostState *pci = PCI_HOST_BRIDGE(dev);
1260     int i, id;
1261     char buf[16];
1262
1263     switch (s->dcrn_base) {
1264     case DCRN_PCIE0_BASE:
1265         id = 0;
1266         break;
1267     case DCRN_PCIE1_BASE:
1268         id = 1;
1269         break;
1270     default:
1271         error_setg(errp, "invalid PCIe DCRN base");
1272         return;
1273     }
1274     snprintf(buf, sizeof(buf), "pcie%d-io", id);
1275     memory_region_init(&s->iomem, OBJECT(s), buf, UINT64_MAX);
1276     for (i = 0; i < 4; i++) {
1277         sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->irq[i]);
1278     }
1279     snprintf(buf, sizeof(buf), "pcie.%d", id);
1280     pci->bus = pci_register_root_bus(DEVICE(s), buf, ppc460ex_set_irq,
1281                                 pci_swizzle_map_irq_fn, s, &s->iomem,
1282                                 get_system_io(), 0, 4, TYPE_PCIE_BUS);
1283 }
1284
1285 static Property ppc460ex_pcie_props[] = {
1286     DEFINE_PROP_INT32("dcrn-base", PPC460EXPCIEState, dcrn_base, -1),
1287     DEFINE_PROP_END_OF_LIST(),
1288 };
1289
1290 static void ppc460ex_pcie_class_init(ObjectClass *klass, void *data)
1291 {
1292     DeviceClass *dc = DEVICE_CLASS(klass);
1293
1294     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
1295     dc->realize = ppc460ex_pcie_realize;
1296     dc->props = ppc460ex_pcie_props;
1297     dc->hotpluggable = false;
1298 }
1299
1300 static const TypeInfo ppc460ex_pcie_host_info = {
1301     .name = TYPE_PPC460EX_PCIE_HOST,
1302     .parent = TYPE_PCIE_HOST_BRIDGE,
1303     .instance_size = sizeof(PPC460EXPCIEState),
1304     .class_init = ppc460ex_pcie_class_init,
1305 };
1306
1307 static void ppc460ex_pcie_register(void)
1308 {
1309     type_register_static(&ppc460ex_pcie_host_info);
1310 }
1311
1312 type_init(ppc460ex_pcie_register)
1313
1314 static void ppc460ex_pcie_register_dcrs(PPC460EXPCIEState *s, CPUPPCState *env)
1315 {
1316     ppc_dcr_register(env, s->dcrn_base + PEGPL_CFGBAH, s,
1317                      &dcr_read_pcie, &dcr_write_pcie);
1318     ppc_dcr_register(env, s->dcrn_base + PEGPL_CFGBAL, s,
1319                      &dcr_read_pcie, &dcr_write_pcie);
1320     ppc_dcr_register(env, s->dcrn_base + PEGPL_CFGMSK, s,
1321                      &dcr_read_pcie, &dcr_write_pcie);
1322     ppc_dcr_register(env, s->dcrn_base + PEGPL_MSGBAH, s,
1323                      &dcr_read_pcie, &dcr_write_pcie);
1324     ppc_dcr_register(env, s->dcrn_base + PEGPL_MSGBAL, s,
1325                      &dcr_read_pcie, &dcr_write_pcie);
1326     ppc_dcr_register(env, s->dcrn_base + PEGPL_MSGMSK, s,
1327                      &dcr_read_pcie, &dcr_write_pcie);
1328     ppc_dcr_register(env, s->dcrn_base + PEGPL_OMR1BAH, s,
1329                      &dcr_read_pcie, &dcr_write_pcie);
1330     ppc_dcr_register(env, s->dcrn_base + PEGPL_OMR1BAL, s,
1331                      &dcr_read_pcie, &dcr_write_pcie);
1332     ppc_dcr_register(env, s->dcrn_base + PEGPL_OMR1MSKH, s,
1333                      &dcr_read_pcie, &dcr_write_pcie);
1334     ppc_dcr_register(env, s->dcrn_base + PEGPL_OMR1MSKL, s,
1335                      &dcr_read_pcie, &dcr_write_pcie);
1336     ppc_dcr_register(env, s->dcrn_base + PEGPL_OMR2BAH, s,
1337                      &dcr_read_pcie, &dcr_write_pcie);
1338     ppc_dcr_register(env, s->dcrn_base + PEGPL_OMR2BAL, s,
1339                      &dcr_read_pcie, &dcr_write_pcie);
1340     ppc_dcr_register(env, s->dcrn_base + PEGPL_OMR2MSKH, s,
1341                      &dcr_read_pcie, &dcr_write_pcie);
1342     ppc_dcr_register(env, s->dcrn_base + PEGPL_OMR2MSKL, s,
1343                      &dcr_read_pcie, &dcr_write_pcie);
1344     ppc_dcr_register(env, s->dcrn_base + PEGPL_OMR3BAH, s,
1345                      &dcr_read_pcie, &dcr_write_pcie);
1346     ppc_dcr_register(env, s->dcrn_base + PEGPL_OMR3BAL, s,
1347                      &dcr_read_pcie, &dcr_write_pcie);
1348     ppc_dcr_register(env, s->dcrn_base + PEGPL_OMR3MSKH, s,
1349                      &dcr_read_pcie, &dcr_write_pcie);
1350     ppc_dcr_register(env, s->dcrn_base + PEGPL_OMR3MSKL, s,
1351                      &dcr_read_pcie, &dcr_write_pcie);
1352     ppc_dcr_register(env, s->dcrn_base + PEGPL_REGBAH, s,
1353                      &dcr_read_pcie, &dcr_write_pcie);
1354     ppc_dcr_register(env, s->dcrn_base + PEGPL_REGBAL, s,
1355                      &dcr_read_pcie, &dcr_write_pcie);
1356     ppc_dcr_register(env, s->dcrn_base + PEGPL_REGMSK, s,
1357                      &dcr_read_pcie, &dcr_write_pcie);
1358     ppc_dcr_register(env, s->dcrn_base + PEGPL_SPECIAL, s,
1359                      &dcr_read_pcie, &dcr_write_pcie);
1360     ppc_dcr_register(env, s->dcrn_base + PEGPL_CFG, s,
1361                      &dcr_read_pcie, &dcr_write_pcie);
1362 }
1363
1364 void ppc460ex_pcie_init(CPUPPCState *env)
1365 {
1366     DeviceState *dev;
1367
1368     dev = qdev_create(NULL, TYPE_PPC460EX_PCIE_HOST);
1369     qdev_prop_set_int32(dev, "dcrn-base", DCRN_PCIE0_BASE);
1370     qdev_init_nofail(dev);
1371     object_property_set_bool(OBJECT(dev), true, "realized", NULL);
1372     ppc460ex_pcie_register_dcrs(PPC460EX_PCIE_HOST(dev), env);
1373
1374     dev = qdev_create(NULL, TYPE_PPC460EX_PCIE_HOST);
1375     qdev_prop_set_int32(dev, "dcrn-base", DCRN_PCIE1_BASE);
1376     qdev_init_nofail(dev);
1377     object_property_set_bool(OBJECT(dev), true, "realized", NULL);
1378     ppc460ex_pcie_register_dcrs(PPC460EX_PCIE_HOST(dev), env);
1379 }