hw/gt64xxx.c

   1 /*
   2  * QEMU GT64120 PCI host
   3  *
   4  * Copyright (c) 2006,2007 Aurelien Jarno
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "vl.h"
  26
  27 typedef target_phys_addr_t pci_addr_t;
  28 #include "pci_host.h"
  29
  30 //#define DEBUG
  31
  32 #ifdef DEBUG
  33 #define dprintf(fmt, ...) fprintf(stderr, "%s: " fmt, __FUNCTION__, ##__VA_ARGS__)
  34 #else
  35 #define dprintf(fmt, ...)
  36 #endif
  37
  38 #define GT_REGS                 (0x1000 >> 2)
  39
  40 /* CPU Configuration */
  41 #define GT_CPU                  (0x000 >> 2)
  42 #define GT_MULTI                (0x120 >> 2)
  43
  44 /* CPU Address Decode */
  45 #define GT_SCS10LD              (0x008 >> 2)
  46 #define GT_SCS10HD              (0x010 >> 2)
  47 #define GT_SCS32LD              (0x018 >> 2)
  48 #define GT_SCS32HD              (0x020 >> 2)
  49 #define GT_CS20LD               (0x028 >> 2)
  50 #define GT_CS20HD               (0x030 >> 2)
  51 #define GT_CS3BOOTLD            (0x038 >> 2)
  52 #define GT_CS3BOOTHD            (0x040 >> 2)
  53 #define GT_PCI0IOLD             (0x048 >> 2)
  54 #define GT_PCI0IOHD             (0x050 >> 2)
  55 #define GT_PCI0M0LD             (0x058 >> 2)
  56 #define GT_PCI0M0HD             (0x060 >> 2)
  57 #define GT_PCI0M1LD             (0x080 >> 2)
  58 #define GT_PCI0M1HD             (0x088 >> 2)
  59 #define GT_PCI1IOLD             (0x090 >> 2)
  60 #define GT_PCI1IOHD             (0x098 >> 2)
  61 #define GT_PCI1M0LD             (0x0a0 >> 2)
  62 #define GT_PCI1M0HD             (0x0a8 >> 2)
  63 #define GT_PCI1M1LD             (0x0b0 >> 2)
  64 #define GT_PCI1M1HD             (0x0b8 >> 2)
  65 #define GT_ISD                  (0x068 >> 2)
  66
  67 #define GT_SCS10AR              (0x0d0 >> 2)
  68 #define GT_SCS32AR              (0x0d8 >> 2)
  69 #define GT_CS20R                (0x0e0 >> 2)
  70 #define GT_CS3BOOTR             (0x0e8 >> 2)
  71
  72 #define GT_PCI0IOREMAP          (0x0f0 >> 2)
  73 #define GT_PCI0M0REMAP          (0x0f8 >> 2)
  74 #define GT_PCI0M1REMAP          (0x100 >> 2)
  75 #define GT_PCI1IOREMAP          (0x108 >> 2)
  76 #define GT_PCI1M0REMAP          (0x110 >> 2)
  77 #define GT_PCI1M1REMAP          (0x118 >> 2)
  78
  79 /* CPU Error Report */
  80 #define GT_CPUERR_ADDRLO        (0x070 >> 2)
  81 #define GT_CPUERR_ADDRHI        (0x078 >> 2)
  82 #define GT_CPUERR_DATALO        (0x128 >> 2)            /* GT-64120A only  */
  83 #define GT_CPUERR_DATAHI        (0x130 >> 2)            /* GT-64120A only  */
  84 #define GT_CPUERR_PARITY        (0x138 >> 2)            /* GT-64120A only  */
  85
  86 /* CPU Sync Barrier */
  87 #define GT_PCI0SYNC             (0x0c0 >> 2)
  88 #define GT_PCI1SYNC             (0x0c8 >> 2)
  89
  90 /* SDRAM and Device Address Decode */
  91 #define GT_SCS0LD               (0x400 >> 2)
  92 #define GT_SCS0HD               (0x404 >> 2)
  93 #define GT_SCS1LD               (0x408 >> 2)
  94 #define GT_SCS1HD               (0x40c >> 2)
  95 #define GT_SCS2LD               (0x410 >> 2)
  96 #define GT_SCS2HD               (0x414 >> 2)
  97 #define GT_SCS3LD               (0x418 >> 2)
  98 #define GT_SCS3HD               (0x41c >> 2)
  99 #define GT_CS0LD                (0x420 >> 2)
 100 #define GT_CS0HD                (0x424 >> 2)
 101 #define GT_CS1LD                (0x428 >> 2)
 102 #define GT_CS1HD                (0x42c >> 2)
 103 #define GT_CS2LD                (0x430 >> 2)
 104 #define GT_CS2HD                (0x434 >> 2)
 105 #define GT_CS3LD                (0x438 >> 2)
 106 #define GT_CS3HD                (0x43c >> 2)
 107 #define GT_BOOTLD               (0x440 >> 2)
 108 #define GT_BOOTHD               (0x444 >> 2)
 109 #define GT_ADERR                (0x470 >> 2)
 110
 111 /* SDRAM Configuration */
 112 #define GT_SDRAM_CFG            (0x448 >> 2)
 113 #define GT_SDRAM_OPMODE         (0x474 >> 2)
 114 #define GT_SDRAM_BM             (0x478 >> 2)
 115 #define GT_SDRAM_ADDRDECODE     (0x47c >> 2)
 116
 117 /* SDRAM Parameters */
 118 #define GT_SDRAM_B0             (0x44c >> 2)
 119 #define GT_SDRAM_B1             (0x450 >> 2)
 120 #define GT_SDRAM_B2             (0x454 >> 2)
 121 #define GT_SDRAM_B3             (0x458 >> 2)
 122
 123 /* Device Parameters */
 124 #define GT_DEV_B0               (0x45c >> 2)
 125 #define GT_DEV_B1               (0x460 >> 2)
 126 #define GT_DEV_B2               (0x464 >> 2)
 127 #define GT_DEV_B3               (0x468 >> 2)
 128 #define GT_DEV_BOOT             (0x46c >> 2)
 129
 130 /* ECC */
 131 #define GT_ECC_ERRDATALO        (0x480 >> 2)            /* GT-64120A only  */
 132 #define GT_ECC_ERRDATAHI        (0x484 >> 2)            /* GT-64120A only  */
 133 #define GT_ECC_MEM              (0x488 >> 2)            /* GT-64120A only  */
 134 #define GT_ECC_CALC             (0x48c >> 2)            /* GT-64120A only  */
 135 #define GT_ECC_ERRADDR          (0x490 >> 2)            /* GT-64120A only  */
 136
 137 /* DMA Record */
 138 #define GT_DMA0_CNT             (0x800 >> 2)
 139 #define GT_DMA1_CNT             (0x804 >> 2)
 140 #define GT_DMA2_CNT             (0x808 >> 2)
 141 #define GT_DMA3_CNT             (0x80c >> 2)
 142 #define GT_DMA0_SA              (0x810 >> 2)
 143 #define GT_DMA1_SA              (0x814 >> 2)
 144 #define GT_DMA2_SA              (0x818 >> 2)
 145 #define GT_DMA3_SA              (0x81c >> 2)
 146 #define GT_DMA0_DA              (0x820 >> 2)
 147 #define GT_DMA1_DA              (0x824 >> 2)
 148 #define GT_DMA2_DA              (0x828 >> 2)
 149 #define GT_DMA3_DA              (0x82c >> 2)
 150 #define GT_DMA0_NEXT            (0x830 >> 2)
 151 #define GT_DMA1_NEXT            (0x834 >> 2)
 152 #define GT_DMA2_NEXT            (0x838 >> 2)
 153 #define GT_DMA3_NEXT            (0x83c >> 2)
 154 #define GT_DMA0_CUR             (0x870 >> 2)
 155 #define GT_DMA1_CUR             (0x874 >> 2)
 156 #define GT_DMA2_CUR             (0x878 >> 2)
 157 #define GT_DMA3_CUR             (0x87c >> 2)
 158
 159 /* DMA Channel Control */
 160 #define GT_DMA0_CTRL            (0x840 >> 2)
 161 #define GT_DMA1_CTRL            (0x844 >> 2)
 162 #define GT_DMA2_CTRL            (0x848 >> 2)
 163 #define GT_DMA3_CTRL            (0x84c >> 2)
 164
 165 /* DMA Arbiter */
 166 #define GT_DMA_ARB              (0x860 >> 2)
 167
 168 /* Timer/Counter */
 169 #define GT_TC0                  (0x850 >> 2)
 170 #define GT_TC1                  (0x854 >> 2)
 171 #define GT_TC2                  (0x858 >> 2)
 172 #define GT_TC3                  (0x85c >> 2)
 173 #define GT_TC_CONTROL           (0x864 >> 2)
 174
 175 /* PCI Internal */
 176 #define GT_PCI0_CMD             (0xc00 >> 2)
 177 #define GT_PCI0_TOR             (0xc04 >> 2)
 178 #define GT_PCI0_BS_SCS10        (0xc08 >> 2)
 179 #define GT_PCI0_BS_SCS32        (0xc0c >> 2)
 180 #define GT_PCI0_BS_CS20         (0xc10 >> 2)
 181 #define GT_PCI0_BS_CS3BT        (0xc14 >> 2)
 182 #define GT_PCI1_IACK            (0xc30 >> 2)
 183 #define GT_PCI0_IACK            (0xc34 >> 2)
 184 #define GT_PCI0_BARE            (0xc3c >> 2)
 185 #define GT_PCI0_PREFMBR         (0xc40 >> 2)
 186 #define GT_PCI0_SCS10_BAR       (0xc48 >> 2)
 187 #define GT_PCI0_SCS32_BAR       (0xc4c >> 2)
 188 #define GT_PCI0_CS20_BAR        (0xc50 >> 2)
 189 #define GT_PCI0_CS3BT_BAR       (0xc54 >> 2)
 190 #define GT_PCI0_SSCS10_BAR      (0xc58 >> 2)
 191 #define GT_PCI0_SSCS32_BAR      (0xc5c >> 2)
 192 #define GT_PCI0_SCS3BT_BAR      (0xc64 >> 2)
 193 #define GT_PCI1_CMD             (0xc80 >> 2)
 194 #define GT_PCI1_TOR             (0xc84 >> 2)
 195 #define GT_PCI1_BS_SCS10        (0xc88 >> 2)
 196 #define GT_PCI1_BS_SCS32        (0xc8c >> 2)
 197 #define GT_PCI1_BS_CS20         (0xc90 >> 2)
 198 #define GT_PCI1_BS_CS3BT        (0xc94 >> 2)
 199 #define GT_PCI1_BARE            (0xcbc >> 2)
 200 #define GT_PCI1_PREFMBR         (0xcc0 >> 2)
 201 #define GT_PCI1_SCS10_BAR       (0xcc8 >> 2)
 202 #define GT_PCI1_SCS32_BAR       (0xccc >> 2)
 203 #define GT_PCI1_CS20_BAR        (0xcd0 >> 2)
 204 #define GT_PCI1_CS3BT_BAR       (0xcd4 >> 2)
 205 #define GT_PCI1_SSCS10_BAR      (0xcd8 >> 2)
 206 #define GT_PCI1_SSCS32_BAR      (0xcdc >> 2)
 207 #define GT_PCI1_SCS3BT_BAR      (0xce4 >> 2)
 208 #define GT_PCI1_CFGADDR         (0xcf0 >> 2)
 209 #define GT_PCI1_CFGDATA         (0xcf4 >> 2)
 210 #define GT_PCI0_CFGADDR         (0xcf8 >> 2)
 211 #define GT_PCI0_CFGDATA         (0xcfc >> 2)
 212
 213 /* Interrupts */
 214 #define GT_INTRCAUSE            (0xc18 >> 2)
 215 #define GT_INTRMASK             (0xc1c >> 2)
 216 #define GT_PCI0_ICMASK          (0xc24 >> 2)
 217 #define GT_PCI0_SERR0MASK       (0xc28 >> 2)
 218 #define GT_CPU_INTSEL           (0xc70 >> 2)
 219 #define GT_PCI0_INTSEL          (0xc74 >> 2)
 220 #define GT_HINTRCAUSE           (0xc98 >> 2)
 221 #define GT_HINTRMASK            (0xc9c >> 2)
 222 #define GT_PCI0_HICMASK         (0xca4 >> 2)
 223 #define GT_PCI1_SERR1MASK       (0xca8 >> 2)
 224
 225
 226 typedef PCIHostState GT64120PCIState;
 227
 228 typedef struct GT64120State {
 229     GT64120PCIState *pci;
 230     uint32_t regs[GT_REGS];
 231     target_phys_addr_t PCI0IO_start;
 232     target_phys_addr_t PCI0IO_length;
 233 } GT64120State;
 234
 235 static void gt64120_pci_mapping(GT64120State *s)
 236 {
 237     /* Update IO mapping */
 238     if ((s->regs[GT_PCI0IOLD] & 0x7f) <= s->regs[GT_PCI0IOHD])
 239     {
 240       /* Unmap old IO address */
 241       if (s->PCI0IO_length)
 242       {
 243         cpu_register_physical_memory(s->PCI0IO_start, s->PCI0IO_length, IO_MEM_UNASSIGNED);
 244       }
 245       /* Map new IO address */
 246       s->PCI0IO_start = s->regs[GT_PCI0IOLD] << 21;
 247       s->PCI0IO_length = ((s->regs[GT_PCI0IOHD] + 1) - (s->regs[GT_PCI0IOLD] & 0x7f)) << 21;
 248       isa_mem_base = s->PCI0IO_start;
 249       isa_mmio_init(s->PCI0IO_start, s->PCI0IO_length);
 250     }
 251 }
 252
 253 static void gt64120_writel (void *opaque, target_phys_addr_t addr,
 254                             uint32_t val)
 255 {
 256     GT64120State *s = opaque;
 257     uint32_t saddr;
 258
 259 #ifdef TARGET_WORDS_BIGENDIAN
 260     val = bswap32(val);
 261 #endif
 262
 263     saddr = (addr & 0xfff) >> 2;
 264     switch (saddr) {
 265
 266     /* CPU Configuration */
 267     case GT_CPU:
 268         s->regs[GT_CPU] = val;
 269         break;
 270     case GT_MULTI:
 271         /* Read-only register as only one GT64xxx is present on the CPU bus */
 272         break;
 273
 274     /* CPU Address Decode */
 275     case GT_PCI0IOLD:
 276         s->regs[GT_PCI0IOLD]    = val & 0x00007fff;
 277         s->regs[GT_PCI0IOREMAP] = val & 0x000007ff;
 278         gt64120_pci_mapping(s);
 279         break;
 280     case GT_PCI0M0LD:
 281         s->regs[GT_PCI0M0LD]    = val & 0x00007fff;
 282         s->regs[GT_PCI0M0REMAP] = val & 0x000007ff;
 283         gt64120_pci_mapping(s);
 284         break;
 285     case GT_PCI0M1LD:
 286         s->regs[GT_PCI0M1LD]    = val & 0x00007fff;
 287         s->regs[GT_PCI0M1REMAP] = val & 0x000007ff;
 288         gt64120_pci_mapping(s);
 289         break;
 290     case GT_PCI1IOLD:
 291         s->regs[GT_PCI1IOLD]    = val & 0x00007fff;
 292         s->regs[GT_PCI1IOREMAP] = val & 0x000007ff;
 293         gt64120_pci_mapping(s);
 294         break;
 295     case GT_PCI1M0LD:
 296         s->regs[GT_PCI1M0LD]    = val & 0x00007fff;
 297         s->regs[GT_PCI1M0REMAP] = val & 0x000007ff;
 298         gt64120_pci_mapping(s);
 299         break;
 300     case GT_PCI1M1LD:
 301         s->regs[GT_PCI1M1LD]    = val & 0x00007fff;
 302         s->regs[GT_PCI1M1REMAP] = val & 0x000007ff;
 303         gt64120_pci_mapping(s);
 304         break;
 305     case GT_PCI0IOHD:
 306     case GT_PCI0M0HD:
 307     case GT_PCI0M1HD:
 308     case GT_PCI1IOHD:
 309     case GT_PCI1M0HD:
 310     case GT_PCI1M1HD:
 311         s->regs[saddr] = val & 0x0000007f;
 312         gt64120_pci_mapping(s);
 313         break;
 314     case GT_PCI0IOREMAP:
 315     case GT_PCI0M0REMAP:
 316     case GT_PCI0M1REMAP:
 317     case GT_PCI1IOREMAP:
 318     case GT_PCI1M0REMAP:
 319     case GT_PCI1M1REMAP:
 320         s->regs[saddr] = val & 0x000007ff;
 321         gt64120_pci_mapping(s);
 322         break;
 323
 324     /* CPU Error Report */
 325     case GT_CPUERR_ADDRLO:
 326     case GT_CPUERR_ADDRHI:
 327     case GT_CPUERR_DATALO:
 328     case GT_CPUERR_DATAHI:
 329     case GT_CPUERR_PARITY:
 330         /* Read-only registers, do nothing */
 331         break;
 332
 333     /* CPU Sync Barrier */
 334     case GT_PCI0SYNC:
 335     case GT_PCI1SYNC:
 336         /* Read-only registers, do nothing */
 337         break;
 338
 339     /* SDRAM and Device Address Decode */
 340     case GT_SCS0LD:
 341     case GT_SCS0HD:
 342     case GT_SCS1LD:
 343     case GT_SCS1HD:
 344     case GT_SCS2LD:
 345     case GT_SCS2HD:
 346     case GT_SCS3LD:
 347     case GT_SCS3HD:
 348     case GT_CS0LD:
 349     case GT_CS0HD:
 350     case GT_CS1LD:
 351     case GT_CS1HD:
 352     case GT_CS2LD:
 353     case GT_CS2HD:
 354     case GT_CS3LD:
 355     case GT_CS3HD:
 356     case GT_BOOTLD:
 357     case GT_BOOTHD:
 358     case GT_ADERR:
 359     /* SDRAM Configuration */
 360     case GT_SDRAM_CFG:
 361     case GT_SDRAM_OPMODE:
 362     case GT_SDRAM_BM:
 363     case GT_SDRAM_ADDRDECODE:
 364         /* Accept and ignore SDRAM interleave configuration */
 365         s->regs[saddr] = val;
 366         break;
 367
 368     /* Device Parameters */
 369     case GT_DEV_B0:
 370     case GT_DEV_B1:
 371     case GT_DEV_B2:
 372     case GT_DEV_B3:
 373     case GT_DEV_BOOT:
 374         /* Not implemented */
 375         dprintf ("Unimplemented device register offset 0x%x\n", saddr << 2);
 376         break;
 377
 378     /* ECC */
 379     case GT_ECC_ERRDATALO:
 380     case GT_ECC_ERRDATAHI:
 381     case GT_ECC_MEM:
 382     case GT_ECC_CALC:
 383     case GT_ECC_ERRADDR:
 384         /* Read-only registers, do nothing */
 385         break;
 386
 387     /* DMA Record */
 388     case GT_DMA0_CNT:
 389     case GT_DMA1_CNT:
 390     case GT_DMA2_CNT:
 391     case GT_DMA3_CNT:
 392     case GT_DMA0_SA:
 393     case GT_DMA1_SA:
 394     case GT_DMA2_SA:
 395     case GT_DMA3_SA:
 396     case GT_DMA0_DA:
 397     case GT_DMA1_DA:
 398     case GT_DMA2_DA:
 399     case GT_DMA3_DA:
 400     case GT_DMA0_NEXT:
 401     case GT_DMA1_NEXT:
 402     case GT_DMA2_NEXT:
 403     case GT_DMA3_NEXT:
 404     case GT_DMA0_CUR:
 405     case GT_DMA1_CUR:
 406     case GT_DMA2_CUR:
 407     case GT_DMA3_CUR:
 408         /* Not implemented */
 409         dprintf ("Unimplemented DMA register offset 0x%x\n", saddr << 2);
 410         break;
 411
 412     /* DMA Channel Control */
 413     case GT_DMA0_CTRL:
 414     case GT_DMA1_CTRL:
 415     case GT_DMA2_CTRL:
 416     case GT_DMA3_CTRL:
 417         /* Not implemented */
 418         dprintf ("Unimplemented DMA register offset 0x%x\n", saddr << 2);
 419         break;
 420
 421     /* DMA Arbiter */
 422     case GT_DMA_ARB:
 423         /* Not implemented */
 424         dprintf ("Unimplemented DMA register offset 0x%x\n", saddr << 2);
 425         break;
 426
 427     /* Timer/Counter */
 428     case GT_TC0:
 429     case GT_TC1:
 430     case GT_TC2:
 431     case GT_TC3:
 432     case GT_TC_CONTROL:
 433         /* Not implemented */
 434         dprintf ("Unimplemented timer register offset 0x%x\n", saddr << 2);
 435         break;
 436
 437     /* PCI Internal */
 438     case GT_PCI0_CMD:
 439     case GT_PCI1_CMD:
 440         s->regs[saddr] = val & 0x0401fc0f;
 441         break;
 442     case GT_PCI0_TOR:
 443     case GT_PCI0_BS_SCS10:
 444     case GT_PCI0_BS_SCS32:
 445     case GT_PCI0_BS_CS20:
 446     case GT_PCI0_BS_CS3BT:
 447     case GT_PCI1_IACK:
 448     case GT_PCI0_IACK:
 449     case GT_PCI0_BARE:
 450     case GT_PCI0_PREFMBR:
 451     case GT_PCI0_SCS10_BAR:
 452     case GT_PCI0_SCS32_BAR:
 453     case GT_PCI0_CS20_BAR:
 454     case GT_PCI0_CS3BT_BAR:
 455     case GT_PCI0_SSCS10_BAR:
 456     case GT_PCI0_SSCS32_BAR:
 457     case GT_PCI0_SCS3BT_BAR:
 458     case GT_PCI1_TOR:
 459     case GT_PCI1_BS_SCS10:
 460     case GT_PCI1_BS_SCS32:
 461     case GT_PCI1_BS_CS20:
 462     case GT_PCI1_BS_CS3BT:
 463     case GT_PCI1_BARE:
 464     case GT_PCI1_PREFMBR:
 465     case GT_PCI1_SCS10_BAR:
 466     case GT_PCI1_SCS32_BAR:
 467     case GT_PCI1_CS20_BAR:
 468     case GT_PCI1_CS3BT_BAR:
 469     case GT_PCI1_SSCS10_BAR:
 470     case GT_PCI1_SSCS32_BAR:
 471     case GT_PCI1_SCS3BT_BAR:
 472     case GT_PCI1_CFGADDR:
 473     case GT_PCI1_CFGDATA:
 474         /* not implemented */
 475         break;
 476     case GT_PCI0_CFGADDR:
 477         s->pci->config_reg = val & 0x80fffffc;
 478         break;
 479     case GT_PCI0_CFGDATA:
 480         if (s->pci->config_reg & (1u << 31))
 481             pci_host_data_writel(s->pci, 0, val);
 482         break;
 483
 484     /* Interrupts */
 485     case GT_INTRCAUSE:
 486         /* not really implemented */
 487         s->regs[saddr] = ~(~(s->regs[saddr]) | ~(val & 0xfffffffe));
 488         s->regs[saddr] |= !!(s->regs[saddr] & 0xfffffffe);
 489         dprintf("INTRCAUSE %x\n", val);
 490         break;
 491     case GT_INTRMASK:
 492         s->regs[saddr] = val & 0x3c3ffffe;
 493         dprintf("INTRMASK %x\n", val);
 494         break;
 495     case GT_PCI0_ICMASK:
 496         s->regs[saddr] = val & 0x03fffffe;
 497         dprintf("ICMASK %x\n", val);
 498         break;
 499     case GT_PCI0_SERR0MASK:
 500         s->regs[saddr] = val & 0x0000003f;
 501         dprintf("SERR0MASK %x\n", val);
 502         break;
 503
 504     /* Reserved when only PCI_0 is configured. */
 505     case GT_HINTRCAUSE:
 506     case GT_CPU_INTSEL:
 507     case GT_PCI0_INTSEL:
 508     case GT_HINTRMASK:
 509     case GT_PCI0_HICMASK:
 510     case GT_PCI1_SERR1MASK:
 511         /* not implemented */
 512         break;
 513
 514     /* SDRAM Parameters */
 515     case GT_SDRAM_B0:
 516     case GT_SDRAM_B1:
 517     case GT_SDRAM_B2:
 518     case GT_SDRAM_B3:
 519         /* We don't simulate electrical parameters of the SDRAM.
 520            Accept, but ignore the values. */
 521         s->regs[saddr] = val;
 522         break;
 523
 524     default:
 525         dprintf ("Bad register offset 0x%x\n", (int)addr);
 526         break;
 527     }
 528 }
 529
 530 static uint32_t gt64120_readl (void *opaque,
 531                                target_phys_addr_t addr)
 532 {
 533     GT64120State *s = opaque;
 534     uint32_t val;
 535     uint32_t saddr;
 536
 537     val = 0;
 538     saddr = (addr & 0xfff) >> 2;
 539
 540     switch (saddr) {
 541
 542     /* CPU Configuration */
 543     case GT_MULTI:
 544         /* Only one GT64xxx is present on the CPU bus, return
 545            the initial value */
 546         val = s->regs[saddr];
 547         break;
 548
 549     /* CPU Error Report */
 550     case GT_CPUERR_ADDRLO:
 551     case GT_CPUERR_ADDRHI:
 552     case GT_CPUERR_DATALO:
 553     case GT_CPUERR_DATAHI:
 554     case GT_CPUERR_PARITY:
 555         /* Emulated memory has no error, always return the initial
 556            values */
 557         val = s->regs[saddr];
 558         break;
 559
 560     /* CPU Sync Barrier */
 561     case GT_PCI0SYNC:
 562     case GT_PCI1SYNC:
 563         /* Reading those register should empty all FIFO on the PCI
 564            bus, which are not emulated. The return value should be
 565            a random value that should be ignored. */
 566         val = 0xc000ffee;
 567         break;
 568
 569     /* ECC */
 570     case GT_ECC_ERRDATALO:
 571     case GT_ECC_ERRDATAHI:
 572     case GT_ECC_MEM:
 573     case GT_ECC_CALC:
 574     case GT_ECC_ERRADDR:
 575         /* Emulated memory has no error, always return the initial
 576            values */
 577         val = s->regs[saddr];
 578         break;
 579
 580     case GT_CPU:
 581     case GT_SCS10LD:
 582     case GT_SCS10HD:
 583     case GT_SCS32LD:
 584     case GT_SCS32HD:
 585     case GT_CS20LD:
 586     case GT_CS20HD:
 587     case GT_CS3BOOTLD:
 588     case GT_CS3BOOTHD:
 589     case GT_SCS10AR:
 590     case GT_SCS32AR:
 591     case GT_CS20R:
 592     case GT_CS3BOOTR:
 593     case GT_PCI0IOLD:
 594     case GT_PCI0M0LD:
 595     case GT_PCI0M1LD:
 596     case GT_PCI1IOLD:
 597     case GT_PCI1M0LD:
 598     case GT_PCI1M1LD:
 599     case GT_PCI0IOHD:
 600     case GT_PCI0M0HD:
 601     case GT_PCI0M1HD:
 602     case GT_PCI1IOHD:
 603     case GT_PCI1M0HD:
 604     case GT_PCI1M1HD:
 605     case GT_PCI0IOREMAP:
 606     case GT_PCI0M0REMAP:
 607     case GT_PCI0M1REMAP:
 608     case GT_PCI1IOREMAP:
 609     case GT_PCI1M0REMAP:
 610     case GT_PCI1M1REMAP:
 611     case GT_ISD:
 612         val = s->regs[saddr];
 613         break;
 614     case GT_PCI0_IACK:
 615         /* Read the IRQ number */
 616         val = pic_read_irq(isa_pic);
 617         break;
 618
 619     /* SDRAM and Device Address Decode */
 620     case GT_SCS0LD:
 621     case GT_SCS0HD:
 622     case GT_SCS1LD:
 623     case GT_SCS1HD:
 624     case GT_SCS2LD:
 625     case GT_SCS2HD:
 626     case GT_SCS3LD:
 627     case GT_SCS3HD:
 628     case GT_CS0LD:
 629     case GT_CS0HD:
 630     case GT_CS1LD:
 631     case GT_CS1HD:
 632     case GT_CS2LD:
 633     case GT_CS2HD:
 634     case GT_CS3LD:
 635     case GT_CS3HD:
 636     case GT_BOOTLD:
 637     case GT_BOOTHD:
 638     case GT_ADERR:
 639         val = s->regs[saddr];
 640         break;
 641
 642     /* SDRAM Configuration */
 643     case GT_SDRAM_CFG:
 644     case GT_SDRAM_OPMODE:
 645     case GT_SDRAM_BM:
 646     case GT_SDRAM_ADDRDECODE:
 647         val = s->regs[saddr];
 648         break;
 649
 650     /* SDRAM Parameters */
 651     case GT_SDRAM_B0:
 652     case GT_SDRAM_B1:
 653     case GT_SDRAM_B2:
 654     case GT_SDRAM_B3:
 655         /* We don't simulate electrical parameters of the SDRAM.
 656            Just return the last written value. */
 657         val = s->regs[saddr];
 658         break;
 659
 660     /* Device Parameters */
 661     case GT_DEV_B0:
 662     case GT_DEV_B1:
 663     case GT_DEV_B2:
 664     case GT_DEV_B3:
 665     case GT_DEV_BOOT:
 666         val = s->regs[saddr];
 667         break;
 668
 669     /* DMA Record */
 670     case GT_DMA0_CNT:
 671     case GT_DMA1_CNT:
 672     case GT_DMA2_CNT:
 673     case GT_DMA3_CNT:
 674     case GT_DMA0_SA:
 675     case GT_DMA1_SA:
 676     case GT_DMA2_SA:
 677     case GT_DMA3_SA:
 678     case GT_DMA0_DA:
 679     case GT_DMA1_DA:
 680     case GT_DMA2_DA:
 681     case GT_DMA3_DA:
 682     case GT_DMA0_NEXT:
 683     case GT_DMA1_NEXT:
 684     case GT_DMA2_NEXT:
 685     case GT_DMA3_NEXT:
 686     case GT_DMA0_CUR:
 687     case GT_DMA1_CUR:
 688     case GT_DMA2_CUR:
 689     case GT_DMA3_CUR:
 690         val = s->regs[saddr];
 691         break;
 692
 693     /* DMA Channel Control */
 694     case GT_DMA0_CTRL:
 695     case GT_DMA1_CTRL:
 696     case GT_DMA2_CTRL:
 697     case GT_DMA3_CTRL:
 698         val = s->regs[saddr];
 699         break;
 700
 701     /* DMA Arbiter */
 702     case GT_DMA_ARB:
 703         val = s->regs[saddr];
 704         break;
 705
 706     /* Timer/Counter */
 707     case GT_TC0:
 708     case GT_TC1:
 709     case GT_TC2:
 710     case GT_TC3:
 711     case GT_TC_CONTROL:
 712         val = s->regs[saddr];
 713         break;
 714
 715     /* PCI Internal */
 716     case GT_PCI0_CFGADDR:
 717         val = s->pci->config_reg;
 718         break;
 719     case GT_PCI0_CFGDATA:
 720         if (!(s->pci->config_reg & (1u << 31)))
 721             val = 0xffffffff;
 722         else
 723             val = pci_data_read(s->pci->bus, s->pci->config_reg, 4);
 724         break;
 725
 726     case GT_PCI0_CMD:
 727     case GT_PCI0_TOR:
 728     case GT_PCI0_BS_SCS10:
 729     case GT_PCI0_BS_SCS32:
 730     case GT_PCI0_BS_CS20:
 731     case GT_PCI0_BS_CS3BT:
 732     case GT_PCI1_IACK:
 733     case GT_PCI0_BARE:
 734     case GT_PCI0_PREFMBR:
 735     case GT_PCI0_SCS10_BAR:
 736     case GT_PCI0_SCS32_BAR:
 737     case GT_PCI0_CS20_BAR:
 738     case GT_PCI0_CS3BT_BAR:
 739     case GT_PCI0_SSCS10_BAR:
 740     case GT_PCI0_SSCS32_BAR:
 741     case GT_PCI0_SCS3BT_BAR:
 742     case GT_PCI1_CMD:
 743     case GT_PCI1_TOR:
 744     case GT_PCI1_BS_SCS10:
 745     case GT_PCI1_BS_SCS32:
 746     case GT_PCI1_BS_CS20:
 747     case GT_PCI1_BS_CS3BT:
 748     case GT_PCI1_BARE:
 749     case GT_PCI1_PREFMBR:
 750     case GT_PCI1_SCS10_BAR:
 751     case GT_PCI1_SCS32_BAR:
 752     case GT_PCI1_CS20_BAR:
 753     case GT_PCI1_CS3BT_BAR:
 754     case GT_PCI1_SSCS10_BAR:
 755     case GT_PCI1_SSCS32_BAR:
 756     case GT_PCI1_SCS3BT_BAR:
 757     case GT_PCI1_CFGADDR:
 758     case GT_PCI1_CFGDATA:
 759         val = s->regs[saddr];
 760         break;
 761
 762     /* Interrupts */
 763     case GT_INTRCAUSE:
 764         val = s->regs[saddr];
 765         dprintf("INTRCAUSE %x\n", val);
 766         break;
 767     case GT_INTRMASK:
 768         val = s->regs[saddr];
 769         dprintf("INTRMASK %x\n", val);
 770         break;
 771     case GT_PCI0_ICMASK:
 772         val = s->regs[saddr];
 773         dprintf("ICMASK %x\n", val);
 774         break;
 775     case GT_PCI0_SERR0MASK:
 776         val = s->regs[saddr];
 777         dprintf("SERR0MASK %x\n", val);
 778         break;
 779
 780     /* Reserved when only PCI_0 is configured. */
 781     case GT_HINTRCAUSE:
 782     case GT_CPU_INTSEL:
 783     case GT_PCI0_INTSEL:
 784     case GT_HINTRMASK:
 785     case GT_PCI0_HICMASK:
 786     case GT_PCI1_SERR1MASK:
 787         val = s->regs[saddr];
 788         break;
 789
 790     default:
 791         val = s->regs[saddr];
 792         dprintf ("Bad register offset 0x%x\n", (int)addr);
 793         break;
 794     }
 795
 796 #ifdef TARGET_WORDS_BIGENDIAN
 797     val = bswap32(val);
 798 #endif
 799     return val;
 800 }
 801
 802 static CPUWriteMemoryFunc *gt64120_write[] = {
 803     &gt64120_writel,
 804     &gt64120_writel,
 805     &gt64120_writel,
 806 };
 807
 808 static CPUReadMemoryFunc *gt64120_read[] = {
 809     &gt64120_readl,
 810     &gt64120_readl,
 811     &gt64120_readl,
 812 };
 813
 814 static int pci_gt64120_map_irq(PCIDevice *pci_dev, int irq_num)
 815 {
 816     int slot;
 817
 818     slot = (pci_dev->devfn >> 3);
 819
 820     switch (slot) {
 821       /* PIIX4 USB */
 822       case 10:
 823         return 3;
 824       /* AMD 79C973 Ethernet */
 825       case 11:
 826         return 1;
 827       /* Crystal 4281 Sound */
 828       case 12:
 829         return 2;
 830       /* PCI slot 1 to 4 */
 831       case 18 ... 21:
 832         return ((slot - 18) + irq_num) & 0x03;
 833       /* Unknown device, don't do any translation */
 834       default:
 835         return irq_num;
 836     }
 837 }
 838
 839 extern PCIDevice *piix4_dev;
 840 static int pci_irq_levels[4];
 841
 842 static void pci_gt64120_set_irq(qemu_irq *pic, int irq_num, int level)
 843 {
 844     int i, pic_irq, pic_level;
 845
 846     pci_irq_levels[irq_num] = level;
 847
 848     /* now we change the pic irq level according to the piix irq mappings */
 849     /* XXX: optimize */
 850     pic_irq = piix4_dev->config[0x60 + irq_num];
 851     if (pic_irq < 16) {
 852         /* The pic level is the logical OR of all the PCI irqs mapped
 853            to it */
 854         pic_level = 0;
 855         for (i = 0; i < 4; i++) {
 856             if (pic_irq == piix4_dev->config[0x60 + i])
 857                 pic_level |= pci_irq_levels[i];
 858         }
 859         qemu_set_irq(pic[pic_irq], pic_level);
 860     }
 861 }
 862
 863
 864 void gt64120_reset(void *opaque)
 865 {
 866     GT64120State *s = opaque;
 867
 868     /* CPU Configuration */
 869 #ifdef TARGET_WORDS_BIGENDIAN
 870     s->regs[GT_CPU]           = 0x00000000;
 871 #else
 872     s->regs[GT_CPU]           = 0x00001000;
 873 #endif
 874     s->regs[GT_MULTI]         = 0x00000000;
 875
 876     /* CPU Address decode FIXME: not complete*/
 877     s->regs[GT_PCI0IOLD]      = 0x00000080;
 878     s->regs[GT_PCI0IOHD]      = 0x0000000f;
 879     s->regs[GT_PCI0M0LD]      = 0x00000090;
 880     s->regs[GT_PCI0M0HD]      = 0x0000001f;
 881     s->regs[GT_PCI0M1LD]      = 0x00000790;
 882     s->regs[GT_PCI0M1HD]      = 0x0000001f;
 883     s->regs[GT_PCI1IOLD]      = 0x00000100;
 884     s->regs[GT_PCI1IOHD]      = 0x0000000f;
 885     s->regs[GT_PCI1M0LD]      = 0x00000110;
 886     s->regs[GT_PCI1M0HD]      = 0x0000001f;
 887     s->regs[GT_PCI1M1LD]      = 0x00000120;
 888     s->regs[GT_PCI1M1HD]      = 0x0000002f;
 889     s->regs[GT_PCI0IOREMAP]   = 0x00000080;
 890     s->regs[GT_PCI0M0REMAP]   = 0x00000090;
 891     s->regs[GT_PCI0M1REMAP]   = 0x00000790;
 892     s->regs[GT_PCI1IOREMAP]   = 0x00000100;
 893     s->regs[GT_PCI1M0REMAP]   = 0x00000110;
 894     s->regs[GT_PCI1M1REMAP]   = 0x00000120;
 895
 896     /* CPU Error Report */
 897     s->regs[GT_CPUERR_ADDRLO] = 0x00000000;
 898     s->regs[GT_CPUERR_ADDRHI] = 0x00000000;
 899     s->regs[GT_CPUERR_DATALO] = 0xffffffff;
 900     s->regs[GT_CPUERR_DATAHI] = 0xffffffff;
 901     s->regs[GT_CPUERR_PARITY] = 0x000000ff;
 902
 903     /* ECC */
 904     s->regs[GT_ECC_ERRDATALO] = 0x00000000;
 905     s->regs[GT_ECC_ERRDATAHI] = 0x00000000;
 906     s->regs[GT_ECC_MEM]       = 0x00000000;
 907     s->regs[GT_ECC_CALC]      = 0x00000000;
 908     s->regs[GT_ECC_ERRADDR]   = 0x00000000;
 909
 910     /* SDRAM Parameters */
 911     s->regs[GT_SDRAM_B0]      = 0x00000005;
 912     s->regs[GT_SDRAM_B1]      = 0x00000005;
 913     s->regs[GT_SDRAM_B2]      = 0x00000005;
 914     s->regs[GT_SDRAM_B3]      = 0x00000005;
 915
 916     /* PCI Internal FIXME: not complete*/
 917 #ifdef TARGET_WORDS_BIGENDIAN
 918     s->regs[GT_PCI0_CMD]      = 0x00000000;
 919     s->regs[GT_PCI1_CMD]      = 0x00000000;
 920 #else
 921     s->regs[GT_PCI0_CMD]      = 0x00010001;
 922     s->regs[GT_PCI1_CMD]      = 0x00010001;
 923 #endif
 924     s->regs[GT_PCI0_IACK]     = 0x00000000;
 925     s->regs[GT_PCI1_IACK]     = 0x00000000;
 926
 927     gt64120_pci_mapping(s);
 928 }
 929
 930 static uint32_t gt64120_read_config(PCIDevice *d, uint32_t address, int len)
 931 {
 932     uint32_t val = pci_default_read_config(d, address, len);
 933 #ifdef TARGET_WORDS_BIGENDIAN
 934     val = bswap32(val);
 935 #endif
 936     return val;
 937 }
 938
 939 static void gt64120_write_config(PCIDevice *d, uint32_t address, uint32_t val,
 940                                  int len)
 941 {
 942 #ifdef TARGET_WORDS_BIGENDIAN
 943     val = bswap32(val);
 944 #endif
 945     pci_default_write_config(d, address, val, len);
 946 }
 947
 948 static void gt64120_save(QEMUFile* f, void *opaque)
 949 {
 950     PCIDevice *d = opaque;
 951     pci_device_save(d, f);
 952 }
 953
 954 static int gt64120_load(QEMUFile* f, void *opaque, int version_id)
 955 {
 956     PCIDevice *d = opaque;
 957     int ret;
 958
 959     if (version_id != 1)
 960         return -EINVAL;
 961     ret = pci_device_load(d, f);
 962     if (ret < 0)
 963         return ret;
 964     return 0;
 965 }
 966
 967 PCIBus *pci_gt64120_init(qemu_irq *pic)
 968 {
 969     GT64120State *s;
 970     PCIDevice *d;
 971     int gt64120;
 972
 973     s = qemu_mallocz(sizeof(GT64120State));
 974     s->pci = qemu_mallocz(sizeof(GT64120PCIState));
 975     gt64120_reset(s);
 976
 977     s->pci->bus = pci_register_bus(pci_gt64120_set_irq, pci_gt64120_map_irq,
 978                                    pic, 144, 4);
 979
 980     gt64120 = cpu_register_io_memory(0, gt64120_read,
 981                                      gt64120_write, s);
 982     cpu_register_physical_memory(0x1be00000LL, 0x1000, gt64120);
 983
 984     d = pci_register_device(s->pci->bus, "GT64120 PCI Bus", sizeof(PCIDevice),
 985                             0, gt64120_read_config, gt64120_write_config);
 986
 987     /* FIXME: Malta specific hw assumptions ahead */
 988
 989     d->config[0x00] = 0xab; // vendor_id
 990     d->config[0x01] = 0x11;
 991     d->config[0x02] = 0x20; // device_id
 992     d->config[0x03] = 0x46;
 993
 994     d->config[0x04] = 0x00;
 995     d->config[0x05] = 0x00;
 996     d->config[0x06] = 0x80;
 997     d->config[0x07] = 0x02;
 998
 999     d->config[0x08] = 0x10;
1000     d->config[0x09] = 0x00;
1001     d->config[0x0A] = 0x00;
1002     d->config[0x0B] = 0x06;
1003
1004     d->config[0x10] = 0x08;
1005     d->config[0x14] = 0x08;
1006     d->config[0x17] = 0x01;
1007     d->config[0x1B] = 0x1c;
1008     d->config[0x1F] = 0x1f;
1009     d->config[0x23] = 0x14;
1010     d->config[0x24] = 0x01;
1011     d->config[0x27] = 0x14;
1012     d->config[0x3D] = 0x01;
1013
1014     register_savevm("GT64120 PCI Bus", 0, 1, gt64120_save, gt64120_load, d);
1015
1016     return s->pci->bus;
1017 }