1 /* 2 * bonito north bridge support 3 * 4 * Copyright (c) 2008 yajin (yajin@vm-kernel.org) 5 * Copyright (c) 2010 Huacai Chen (zltjiangshi@gmail.com) 6 * 7 * This code is licensed under the GNU GPL v2. 8 * 9 * Contributions after 2012-01-13 are licensed under the terms of the 10 * GNU GPL, version 2 or (at your option) any later version. 11 */ 12 13 /* 14 * fulong 2e mini pc has a bonito north bridge. 15 */ 16 17 /* what is the meaning of devfn in qemu and IDSEL in bonito northbridge? 18 * 19 * devfn pci_slot<<3 + funno 20 * one pci bus can have 32 devices and each device can have 8 functions. 21 * 22 * In bonito north bridge, pci slot = IDSEL bit - 12. 23 * For example, PCI_IDSEL_VIA686B = 17, 24 * pci slot = 17-12=5 25 * 26 * so 27 * VT686B_FUN0's devfn = (5<<3)+0 28 * VT686B_FUN1's devfn = (5<<3)+1 29 * 30 * qemu also uses pci address for north bridge to access pci config register. 31 * bus_no [23:16] 32 * dev_no [15:11] 33 * fun_no [10:8] 34 * reg_no [7:2] 35 * 36 * so function bonito_sbridge_pciaddr for the translation from 37 * north bridge address to pci address. 38 */ 39 40 #include <assert.h> 41 42 #include "hw/hw.h" 43 #include "hw/pci/pci.h" 44 #include "hw/i386/pc.h" 45 #include "hw/mips/mips.h" 46 #include "hw/pci/pci_host.h" 47 #include "sysemu/sysemu.h" 48 #include "exec/address-spaces.h" 49 50 //#define DEBUG_BONITO 51 52 #ifdef DEBUG_BONITO 53 #define DPRINTF(fmt, ...) fprintf(stderr, "%s: " fmt, __FUNCTION__, ##__VA_ARGS__) 54 #else 55 #define DPRINTF(fmt, ...) 56 #endif 57 58 /* from linux soure code. include/asm-mips/mips-boards/bonito64.h*/ 59 #define BONITO_BOOT_BASE 0x1fc00000 60 #define BONITO_BOOT_SIZE 0x00100000 61 #define BONITO_BOOT_TOP (BONITO_BOOT_BASE+BONITO_BOOT_SIZE-1) 62 #define BONITO_FLASH_BASE 0x1c000000 63 #define BONITO_FLASH_SIZE 0x03000000 64 #define BONITO_FLASH_TOP (BONITO_FLASH_BASE+BONITO_FLASH_SIZE-1) 65 #define BONITO_SOCKET_BASE 0x1f800000 66 #define BONITO_SOCKET_SIZE 0x00400000 67 #define BONITO_SOCKET_TOP (BONITO_SOCKET_BASE+BONITO_SOCKET_SIZE-1) 68 #define BONITO_REG_BASE 0x1fe00000 69 #define BONITO_REG_SIZE 0x00040000 70 #define BONITO_REG_TOP (BONITO_REG_BASE+BONITO_REG_SIZE-1) 71 #define BONITO_DEV_BASE 0x1ff00000 72 #define BONITO_DEV_SIZE 0x00100000 73 #define BONITO_DEV_TOP (BONITO_DEV_BASE+BONITO_DEV_SIZE-1) 74 #define BONITO_PCILO_BASE 0x10000000 75 #define BONITO_PCILO_BASE_VA 0xb0000000 76 #define BONITO_PCILO_SIZE 0x0c000000 77 #define BONITO_PCILO_TOP (BONITO_PCILO_BASE+BONITO_PCILO_SIZE-1) 78 #define BONITO_PCILO0_BASE 0x10000000 79 #define BONITO_PCILO1_BASE 0x14000000 80 #define BONITO_PCILO2_BASE 0x18000000 81 #define BONITO_PCIHI_BASE 0x20000000 82 #define BONITO_PCIHI_SIZE 0x20000000 83 #define BONITO_PCIHI_TOP (BONITO_PCIHI_BASE+BONITO_PCIHI_SIZE-1) 84 #define BONITO_PCIIO_BASE 0x1fd00000 85 #define BONITO_PCIIO_BASE_VA 0xbfd00000 86 #define BONITO_PCIIO_SIZE 0x00010000 87 #define BONITO_PCIIO_TOP (BONITO_PCIIO_BASE+BONITO_PCIIO_SIZE-1) 88 #define BONITO_PCICFG_BASE 0x1fe80000 89 #define BONITO_PCICFG_SIZE 0x00080000 90 #define BONITO_PCICFG_TOP (BONITO_PCICFG_BASE+BONITO_PCICFG_SIZE-1) 91 92 93 #define BONITO_PCICONFIGBASE 0x00 94 #define BONITO_REGBASE 0x100 95 96 #define BONITO_PCICONFIG_BASE (BONITO_PCICONFIGBASE+BONITO_REG_BASE) 97 #define BONITO_PCICONFIG_SIZE (0x100) 98 99 #define BONITO_INTERNAL_REG_BASE (BONITO_REGBASE+BONITO_REG_BASE) 100 #define BONITO_INTERNAL_REG_SIZE (0x70) 101 102 #define BONITO_SPCICONFIG_BASE (BONITO_PCICFG_BASE) 103 #define BONITO_SPCICONFIG_SIZE (BONITO_PCICFG_SIZE) 104 105 106 107 /* 1. Bonito h/w Configuration */ 108 /* Power on register */ 109 110 #define BONITO_BONPONCFG (0x00 >> 2) /* 0x100 */ 111 #define BONITO_BONGENCFG_OFFSET 0x4 112 #define BONITO_BONGENCFG (BONITO_BONGENCFG_OFFSET>>2) /*0x104 */ 113 114 /* 2. IO & IDE configuration */ 115 #define BONITO_IODEVCFG (0x08 >> 2) /* 0x108 */ 116 117 /* 3. IO & IDE configuration */ 118 #define BONITO_SDCFG (0x0c >> 2) /* 0x10c */ 119 120 /* 4. PCI address map control */ 121 #define BONITO_PCIMAP (0x10 >> 2) /* 0x110 */ 122 #define BONITO_PCIMEMBASECFG (0x14 >> 2) /* 0x114 */ 123 #define BONITO_PCIMAP_CFG (0x18 >> 2) /* 0x118 */ 124 125 /* 5. ICU & GPIO regs */ 126 /* GPIO Regs - r/w */ 127 #define BONITO_GPIODATA_OFFSET 0x1c 128 #define BONITO_GPIODATA (BONITO_GPIODATA_OFFSET >> 2) /* 0x11c */ 129 #define BONITO_GPIOIE (0x20 >> 2) /* 0x120 */ 130 131 /* ICU Configuration Regs - r/w */ 132 #define BONITO_INTEDGE (0x24 >> 2) /* 0x124 */ 133 #define BONITO_INTSTEER (0x28 >> 2) /* 0x128 */ 134 #define BONITO_INTPOL (0x2c >> 2) /* 0x12c */ 135 136 /* ICU Enable Regs - IntEn & IntISR are r/o. */ 137 #define BONITO_INTENSET (0x30 >> 2) /* 0x130 */ 138 #define BONITO_INTENCLR (0x34 >> 2) /* 0x134 */ 139 #define BONITO_INTEN (0x38 >> 2) /* 0x138 */ 140 #define BONITO_INTISR (0x3c >> 2) /* 0x13c */ 141 142 /* PCI mail boxes */ 143 #define BONITO_PCIMAIL0_OFFSET 0x40 144 #define BONITO_PCIMAIL1_OFFSET 0x44 145 #define BONITO_PCIMAIL2_OFFSET 0x48 146 #define BONITO_PCIMAIL3_OFFSET 0x4c 147 #define BONITO_PCIMAIL0 (0x40 >> 2) /* 0x140 */ 148 #define BONITO_PCIMAIL1 (0x44 >> 2) /* 0x144 */ 149 #define BONITO_PCIMAIL2 (0x48 >> 2) /* 0x148 */ 150 #define BONITO_PCIMAIL3 (0x4c >> 2) /* 0x14c */ 151 152 /* 6. PCI cache */ 153 #define BONITO_PCICACHECTRL (0x50 >> 2) /* 0x150 */ 154 #define BONITO_PCICACHETAG (0x54 >> 2) /* 0x154 */ 155 #define BONITO_PCIBADADDR (0x58 >> 2) /* 0x158 */ 156 #define BONITO_PCIMSTAT (0x5c >> 2) /* 0x15c */ 157 158 /* 7. other*/ 159 #define BONITO_TIMECFG (0x60 >> 2) /* 0x160 */ 160 #define BONITO_CPUCFG (0x64 >> 2) /* 0x164 */ 161 #define BONITO_DQCFG (0x68 >> 2) /* 0x168 */ 162 #define BONITO_MEMSIZE (0x6C >> 2) /* 0x16c */ 163 164 #define BONITO_REGS (0x70 >> 2) 165 166 /* PCI config for south bridge. type 0 */ 167 #define BONITO_PCICONF_IDSEL_MASK 0xfffff800 /* [31:11] */ 168 #define BONITO_PCICONF_IDSEL_OFFSET 11 169 #define BONITO_PCICONF_FUN_MASK 0x700 /* [10:8] */ 170 #define BONITO_PCICONF_FUN_OFFSET 8 171 #define BONITO_PCICONF_REG_MASK 0xFC 172 #define BONITO_PCICONF_REG_OFFSET 0 173 174 175 /* idsel BIT = pci slot number +12 */ 176 #define PCI_SLOT_BASE 12 177 #define PCI_IDSEL_VIA686B_BIT (17) 178 #define PCI_IDSEL_VIA686B (1<<PCI_IDSEL_VIA686B_BIT) 179 180 #define PCI_ADDR(busno,devno,funno,regno) \ 181 ((((busno)<<16)&0xff0000) + (((devno)<<11)&0xf800) + (((funno)<<8)&0x700) + (regno)) 182 183 #define TYPE_BONITO_PCI_HOST_BRIDGE "Bonito-pcihost" 184 185 typedef struct BonitoState BonitoState; 186 187 typedef struct PCIBonitoState 188 { 189 PCIDevice dev; 190 191 BonitoState *pcihost; 192 uint32_t regs[BONITO_REGS]; 193 194 struct bonldma { 195 uint32_t ldmactrl; 196 uint32_t ldmastat; 197 uint32_t ldmaaddr; 198 uint32_t ldmago; 199 } bonldma; 200 201 /* Based at 1fe00300, bonito Copier */ 202 struct boncop { 203 uint32_t copctrl; 204 uint32_t copstat; 205 uint32_t coppaddr; 206 uint32_t copgo; 207 } boncop; 208 209 /* Bonito registers */ 210 MemoryRegion iomem; 211 MemoryRegion iomem_ldma; 212 MemoryRegion iomem_cop; 213 MemoryRegion bonito_pciio; 214 MemoryRegion bonito_localio; 215 216 } PCIBonitoState; 217 218 #define BONITO_PCI_HOST_BRIDGE(obj) \ 219 OBJECT_CHECK(BonitoState, (obj), TYPE_BONITO_PCI_HOST_BRIDGE) 220 221 struct BonitoState { 222 PCIHostState parent_obj; 223 224 qemu_irq *pic; 225 226 PCIBonitoState *pci_dev; 227 }; 228 229 static void bonito_writel(void *opaque, hwaddr addr, 230 uint64_t val, unsigned size) 231 { 232 PCIBonitoState *s = opaque; 233 uint32_t saddr; 234 int reset = 0; 235 236 saddr = addr >> 2; 237 238 DPRINTF("bonito_writel "TARGET_FMT_plx" val %x saddr %x\n", addr, val, saddr); 239 switch (saddr) { 240 case BONITO_BONPONCFG: 241 case BONITO_IODEVCFG: 242 case BONITO_SDCFG: 243 case BONITO_PCIMAP: 244 case BONITO_PCIMEMBASECFG: 245 case BONITO_PCIMAP_CFG: 246 case BONITO_GPIODATA: 247 case BONITO_GPIOIE: 248 case BONITO_INTEDGE: 249 case BONITO_INTSTEER: 250 case BONITO_INTPOL: 251 case BONITO_PCIMAIL0: 252 case BONITO_PCIMAIL1: 253 case BONITO_PCIMAIL2: 254 case BONITO_PCIMAIL3: 255 case BONITO_PCICACHECTRL: 256 case BONITO_PCICACHETAG: 257 case BONITO_PCIBADADDR: 258 case BONITO_PCIMSTAT: 259 case BONITO_TIMECFG: 260 case BONITO_CPUCFG: 261 case BONITO_DQCFG: 262 case BONITO_MEMSIZE: 263 s->regs[saddr] = val; 264 break; 265 case BONITO_BONGENCFG: 266 if (!(s->regs[saddr] & 0x04) && (val & 0x04)) { 267 reset = 1; /* bit 2 jump from 0 to 1 cause reset */ 268 } 269 s->regs[saddr] = val; 270 if (reset) { 271 qemu_system_reset_request(); 272 } 273 break; 274 case BONITO_INTENSET: 275 s->regs[BONITO_INTENSET] = val; 276 s->regs[BONITO_INTEN] |= val; 277 break; 278 case BONITO_INTENCLR: 279 s->regs[BONITO_INTENCLR] = val; 280 s->regs[BONITO_INTEN] &= ~val; 281 break; 282 case BONITO_INTEN: 283 case BONITO_INTISR: 284 DPRINTF("write to readonly bonito register %x\n", saddr); 285 break; 286 default: 287 DPRINTF("write to unknown bonito register %x\n", saddr); 288 break; 289 } 290 } 291 292 static uint64_t bonito_readl(void *opaque, hwaddr addr, 293 unsigned size) 294 { 295 PCIBonitoState *s = opaque; 296 uint32_t saddr; 297 298 saddr = addr >> 2; 299 300 DPRINTF("bonito_readl "TARGET_FMT_plx"\n", addr); 301 switch (saddr) { 302 case BONITO_INTISR: 303 return s->regs[saddr]; 304 default: 305 return s->regs[saddr]; 306 } 307 } 308 309 static const MemoryRegionOps bonito_ops = { 310 .read = bonito_readl, 311 .write = bonito_writel, 312 .endianness = DEVICE_NATIVE_ENDIAN, 313 .valid = { 314 .min_access_size = 4, 315 .max_access_size = 4, 316 }, 317 }; 318 319 static void bonito_pciconf_writel(void *opaque, hwaddr addr, 320 uint64_t val, unsigned size) 321 { 322 PCIBonitoState *s = opaque; 323 PCIDevice *d = PCI_DEVICE(s); 324 325 DPRINTF("bonito_pciconf_writel "TARGET_FMT_plx" val %x\n", addr, val); 326 d->config_write(d, addr, val, 4); 327 } 328 329 static uint64_t bonito_pciconf_readl(void *opaque, hwaddr addr, 330 unsigned size) 331 { 332 333 PCIBonitoState *s = opaque; 334 PCIDevice *d = PCI_DEVICE(s); 335 336 DPRINTF("bonito_pciconf_readl "TARGET_FMT_plx"\n", addr); 337 return d->config_read(d, addr, 4); 338 } 339 340 /* north bridge PCI configure space. 0x1fe0 0000 - 0x1fe0 00ff */ 341 342 static const MemoryRegionOps bonito_pciconf_ops = { 343 .read = bonito_pciconf_readl, 344 .write = bonito_pciconf_writel, 345 .endianness = DEVICE_NATIVE_ENDIAN, 346 .valid = { 347 .min_access_size = 4, 348 .max_access_size = 4, 349 }, 350 }; 351 352 static uint64_t bonito_ldma_readl(void *opaque, hwaddr addr, 353 unsigned size) 354 { 355 uint32_t val; 356 PCIBonitoState *s = opaque; 357 358 val = ((uint32_t *)(&s->bonldma))[addr/sizeof(uint32_t)]; 359 360 return val; 361 } 362 363 static void bonito_ldma_writel(void *opaque, hwaddr addr, 364 uint64_t val, unsigned size) 365 { 366 PCIBonitoState *s = opaque; 367 368 ((uint32_t *)(&s->bonldma))[addr/sizeof(uint32_t)] = val & 0xffffffff; 369 } 370 371 static const MemoryRegionOps bonito_ldma_ops = { 372 .read = bonito_ldma_readl, 373 .write = bonito_ldma_writel, 374 .endianness = DEVICE_NATIVE_ENDIAN, 375 .valid = { 376 .min_access_size = 4, 377 .max_access_size = 4, 378 }, 379 }; 380 381 static uint64_t bonito_cop_readl(void *opaque, hwaddr addr, 382 unsigned size) 383 { 384 uint32_t val; 385 PCIBonitoState *s = opaque; 386 387 val = ((uint32_t *)(&s->boncop))[addr/sizeof(uint32_t)]; 388 389 return val; 390 } 391 392 static void bonito_cop_writel(void *opaque, hwaddr addr, 393 uint64_t val, unsigned size) 394 { 395 PCIBonitoState *s = opaque; 396 397 ((uint32_t *)(&s->boncop))[addr/sizeof(uint32_t)] = val & 0xffffffff; 398 } 399 400 static const MemoryRegionOps bonito_cop_ops = { 401 .read = bonito_cop_readl, 402 .write = bonito_cop_writel, 403 .endianness = DEVICE_NATIVE_ENDIAN, 404 .valid = { 405 .min_access_size = 4, 406 .max_access_size = 4, 407 }, 408 }; 409 410 static uint32_t bonito_sbridge_pciaddr(void *opaque, hwaddr addr) 411 { 412 PCIBonitoState *s = opaque; 413 PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost); 414 uint32_t cfgaddr; 415 uint32_t idsel; 416 uint32_t devno; 417 uint32_t funno; 418 uint32_t regno; 419 uint32_t pciaddr; 420 421 /* support type0 pci config */ 422 if ((s->regs[BONITO_PCIMAP_CFG] & 0x10000) != 0x0) { 423 return 0xffffffff; 424 } 425 426 cfgaddr = addr & 0xffff; 427 cfgaddr |= (s->regs[BONITO_PCIMAP_CFG] & 0xffff) << 16; 428 429 idsel = (cfgaddr & BONITO_PCICONF_IDSEL_MASK) >> BONITO_PCICONF_IDSEL_OFFSET; 430 devno = ctz32(idsel); 431 funno = (cfgaddr & BONITO_PCICONF_FUN_MASK) >> BONITO_PCICONF_FUN_OFFSET; 432 regno = (cfgaddr & BONITO_PCICONF_REG_MASK) >> BONITO_PCICONF_REG_OFFSET; 433 434 if (idsel == 0) { 435 fprintf(stderr, "error in bonito pci config address " TARGET_FMT_plx 436 ",pcimap_cfg=%x\n", addr, s->regs[BONITO_PCIMAP_CFG]); 437 exit(1); 438 } 439 pciaddr = PCI_ADDR(pci_bus_num(phb->bus), devno, funno, regno); 440 DPRINTF("cfgaddr %x pciaddr %x busno %x devno %d funno %d regno %d\n", 441 cfgaddr, pciaddr, pci_bus_num(phb->bus), devno, funno, regno); 442 443 return pciaddr; 444 } 445 446 static void bonito_spciconf_writeb(void *opaque, hwaddr addr, 447 uint32_t val) 448 { 449 PCIBonitoState *s = opaque; 450 PCIDevice *d = PCI_DEVICE(s); 451 PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost); 452 uint32_t pciaddr; 453 uint16_t status; 454 455 DPRINTF("bonito_spciconf_writeb "TARGET_FMT_plx" val %x\n", addr, val); 456 pciaddr = bonito_sbridge_pciaddr(s, addr); 457 458 if (pciaddr == 0xffffffff) { 459 return; 460 } 461 462 /* set the pci address in s->config_reg */ 463 phb->config_reg = (pciaddr) | (1u << 31); 464 pci_data_write(phb->bus, phb->config_reg, val & 0xff, 1); 465 466 /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */ 467 status = pci_get_word(d->config + PCI_STATUS); 468 status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT); 469 pci_set_word(d->config + PCI_STATUS, status); 470 } 471 472 static void bonito_spciconf_writew(void *opaque, hwaddr addr, 473 uint32_t val) 474 { 475 PCIBonitoState *s = opaque; 476 PCIDevice *d = PCI_DEVICE(s); 477 PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost); 478 uint32_t pciaddr; 479 uint16_t status; 480 481 DPRINTF("bonito_spciconf_writew "TARGET_FMT_plx" val %x\n", addr, val); 482 assert((addr & 0x1) == 0); 483 484 pciaddr = bonito_sbridge_pciaddr(s, addr); 485 486 if (pciaddr == 0xffffffff) { 487 return; 488 } 489 490 /* set the pci address in s->config_reg */ 491 phb->config_reg = (pciaddr) | (1u << 31); 492 pci_data_write(phb->bus, phb->config_reg, val, 2); 493 494 /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */ 495 status = pci_get_word(d->config + PCI_STATUS); 496 status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT); 497 pci_set_word(d->config + PCI_STATUS, status); 498 } 499 500 static void bonito_spciconf_writel(void *opaque, hwaddr addr, 501 uint32_t val) 502 { 503 PCIBonitoState *s = opaque; 504 PCIDevice *d = PCI_DEVICE(s); 505 PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost); 506 uint32_t pciaddr; 507 uint16_t status; 508 509 DPRINTF("bonito_spciconf_writel "TARGET_FMT_plx" val %x\n", addr, val); 510 assert((addr & 0x3) == 0); 511 512 pciaddr = bonito_sbridge_pciaddr(s, addr); 513 514 if (pciaddr == 0xffffffff) { 515 return; 516 } 517 518 /* set the pci address in s->config_reg */ 519 phb->config_reg = (pciaddr) | (1u << 31); 520 pci_data_write(phb->bus, phb->config_reg, val, 4); 521 522 /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */ 523 status = pci_get_word(d->config + PCI_STATUS); 524 status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT); 525 pci_set_word(d->config + PCI_STATUS, status); 526 } 527 528 static uint32_t bonito_spciconf_readb(void *opaque, hwaddr addr) 529 { 530 PCIBonitoState *s = opaque; 531 PCIDevice *d = PCI_DEVICE(s); 532 PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost); 533 uint32_t pciaddr; 534 uint16_t status; 535 536 DPRINTF("bonito_spciconf_readb "TARGET_FMT_plx"\n", addr); 537 pciaddr = bonito_sbridge_pciaddr(s, addr); 538 539 if (pciaddr == 0xffffffff) { 540 return 0xff; 541 } 542 543 /* set the pci address in s->config_reg */ 544 phb->config_reg = (pciaddr) | (1u << 31); 545 546 /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */ 547 status = pci_get_word(d->config + PCI_STATUS); 548 status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT); 549 pci_set_word(d->config + PCI_STATUS, status); 550 551 return pci_data_read(phb->bus, phb->config_reg, 1); 552 } 553 554 static uint32_t bonito_spciconf_readw(void *opaque, hwaddr addr) 555 { 556 PCIBonitoState *s = opaque; 557 PCIDevice *d = PCI_DEVICE(s); 558 PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost); 559 uint32_t pciaddr; 560 uint16_t status; 561 562 DPRINTF("bonito_spciconf_readw "TARGET_FMT_plx"\n", addr); 563 assert((addr & 0x1) == 0); 564 565 pciaddr = bonito_sbridge_pciaddr(s, addr); 566 567 if (pciaddr == 0xffffffff) { 568 return 0xffff; 569 } 570 571 /* set the pci address in s->config_reg */ 572 phb->config_reg = (pciaddr) | (1u << 31); 573 574 /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */ 575 status = pci_get_word(d->config + PCI_STATUS); 576 status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT); 577 pci_set_word(d->config + PCI_STATUS, status); 578 579 return pci_data_read(phb->bus, phb->config_reg, 2); 580 } 581 582 static uint32_t bonito_spciconf_readl(void *opaque, hwaddr addr) 583 { 584 PCIBonitoState *s = opaque; 585 PCIDevice *d = PCI_DEVICE(s); 586 PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost); 587 uint32_t pciaddr; 588 uint16_t status; 589 590 DPRINTF("bonito_spciconf_readl "TARGET_FMT_plx"\n", addr); 591 assert((addr & 0x3) == 0); 592 593 pciaddr = bonito_sbridge_pciaddr(s, addr); 594 595 if (pciaddr == 0xffffffff) { 596 return 0xffffffff; 597 } 598 599 /* set the pci address in s->config_reg */ 600 phb->config_reg = (pciaddr) | (1u << 31); 601 602 /* clear PCI_STATUS_REC_MASTER_ABORT and PCI_STATUS_REC_TARGET_ABORT */ 603 status = pci_get_word(d->config + PCI_STATUS); 604 status &= ~(PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_REC_TARGET_ABORT); 605 pci_set_word(d->config + PCI_STATUS, status); 606 607 return pci_data_read(phb->bus, phb->config_reg, 4); 608 } 609 610 /* south bridge PCI configure space. 0x1fe8 0000 - 0x1fef ffff */ 611 static const MemoryRegionOps bonito_spciconf_ops = { 612 .old_mmio = { 613 .read = { 614 bonito_spciconf_readb, 615 bonito_spciconf_readw, 616 bonito_spciconf_readl, 617 }, 618 .write = { 619 bonito_spciconf_writeb, 620 bonito_spciconf_writew, 621 bonito_spciconf_writel, 622 }, 623 }, 624 .endianness = DEVICE_NATIVE_ENDIAN, 625 }; 626 627 #define BONITO_IRQ_BASE 32 628 629 static void pci_bonito_set_irq(void *opaque, int irq_num, int level) 630 { 631 BonitoState *s = opaque; 632 qemu_irq *pic = s->pic; 633 PCIBonitoState *bonito_state = s->pci_dev; 634 int internal_irq = irq_num - BONITO_IRQ_BASE; 635 636 if (bonito_state->regs[BONITO_INTEDGE] & (1 << internal_irq)) { 637 qemu_irq_pulse(*pic); 638 } else { /* level triggered */ 639 if (bonito_state->regs[BONITO_INTPOL] & (1 << internal_irq)) { 640 qemu_irq_raise(*pic); 641 } else { 642 qemu_irq_lower(*pic); 643 } 644 } 645 } 646 647 /* map the original irq (0~3) to bonito irq (16~47, but 16~31 are unused) */ 648 static int pci_bonito_map_irq(PCIDevice * pci_dev, int irq_num) 649 { 650 int slot; 651 652 slot = (pci_dev->devfn >> 3); 653 654 switch (slot) { 655 case 5: /* FULONG2E_VIA_SLOT, SouthBridge, IDE, USB, ACPI, AC97, MC97 */ 656 return irq_num % 4 + BONITO_IRQ_BASE; 657 case 6: /* FULONG2E_ATI_SLOT, VGA */ 658 return 4 + BONITO_IRQ_BASE; 659 case 7: /* FULONG2E_RTL_SLOT, RTL8139 */ 660 return 5 + BONITO_IRQ_BASE; 661 case 8 ... 12: /* PCI slot 1 to 4 */ 662 return (slot - 8 + irq_num) + 6 + BONITO_IRQ_BASE; 663 default: /* Unknown device, don't do any translation */ 664 return irq_num; 665 } 666 } 667 668 static void bonito_reset(void *opaque) 669 { 670 PCIBonitoState *s = opaque; 671 672 /* set the default value of north bridge registers */ 673 674 s->regs[BONITO_BONPONCFG] = 0xc40; 675 s->regs[BONITO_BONGENCFG] = 0x1384; 676 s->regs[BONITO_IODEVCFG] = 0x2bff8010; 677 s->regs[BONITO_SDCFG] = 0x255e0091; 678 679 s->regs[BONITO_GPIODATA] = 0x1ff; 680 s->regs[BONITO_GPIOIE] = 0x1ff; 681 s->regs[BONITO_DQCFG] = 0x8; 682 s->regs[BONITO_MEMSIZE] = 0x10000000; 683 s->regs[BONITO_PCIMAP] = 0x6140; 684 } 685 686 static const VMStateDescription vmstate_bonito = { 687 .name = "Bonito", 688 .version_id = 1, 689 .minimum_version_id = 1, 690 .fields = (VMStateField[]) { 691 VMSTATE_PCI_DEVICE(dev, PCIBonitoState), 692 VMSTATE_END_OF_LIST() 693 } 694 }; 695 696 static int bonito_pcihost_initfn(SysBusDevice *dev) 697 { 698 PCIHostState *phb = PCI_HOST_BRIDGE(dev); 699 700 phb->bus = pci_register_bus(DEVICE(dev), "pci", 701 pci_bonito_set_irq, pci_bonito_map_irq, dev, 702 get_system_memory(), get_system_io(), 703 0x28, 32, TYPE_PCI_BUS); 704 705 return 0; 706 } 707 708 static void bonito_realize(PCIDevice *dev, Error **errp) 709 { 710 PCIBonitoState *s = DO_UPCAST(PCIBonitoState, dev, dev); 711 SysBusDevice *sysbus = SYS_BUS_DEVICE(s->pcihost); 712 PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost); 713 714 /* Bonito North Bridge, built on FPGA, VENDOR_ID/DEVICE_ID are "undefined" */ 715 pci_config_set_prog_interface(dev->config, 0x00); 716 717 /* set the north bridge register mapping */ 718 memory_region_init_io(&s->iomem, OBJECT(s), &bonito_ops, s, 719 "north-bridge-register", BONITO_INTERNAL_REG_SIZE); 720 sysbus_init_mmio(sysbus, &s->iomem); 721 sysbus_mmio_map(sysbus, 0, BONITO_INTERNAL_REG_BASE); 722 723 /* set the north bridge pci configure mapping */ 724 memory_region_init_io(&phb->conf_mem, OBJECT(s), &bonito_pciconf_ops, s, 725 "north-bridge-pci-config", BONITO_PCICONFIG_SIZE); 726 sysbus_init_mmio(sysbus, &phb->conf_mem); 727 sysbus_mmio_map(sysbus, 1, BONITO_PCICONFIG_BASE); 728 729 /* set the south bridge pci configure mapping */ 730 memory_region_init_io(&phb->data_mem, OBJECT(s), &bonito_spciconf_ops, s, 731 "south-bridge-pci-config", BONITO_SPCICONFIG_SIZE); 732 sysbus_init_mmio(sysbus, &phb->data_mem); 733 sysbus_mmio_map(sysbus, 2, BONITO_SPCICONFIG_BASE); 734 735 memory_region_init_io(&s->iomem_ldma, OBJECT(s), &bonito_ldma_ops, s, 736 "ldma", 0x100); 737 sysbus_init_mmio(sysbus, &s->iomem_ldma); 738 sysbus_mmio_map(sysbus, 3, 0xbfe00200); 739 740 memory_region_init_io(&s->iomem_cop, OBJECT(s), &bonito_cop_ops, s, 741 "cop", 0x100); 742 sysbus_init_mmio(sysbus, &s->iomem_cop); 743 sysbus_mmio_map(sysbus, 4, 0xbfe00300); 744 745 /* Map PCI IO Space 0x1fd0 0000 - 0x1fd1 0000 */ 746 memory_region_init_alias(&s->bonito_pciio, OBJECT(s), "isa_mmio", 747 get_system_io(), 0, BONITO_PCIIO_SIZE); 748 sysbus_init_mmio(sysbus, &s->bonito_pciio); 749 sysbus_mmio_map(sysbus, 5, BONITO_PCIIO_BASE); 750 751 /* add pci local io mapping */ 752 memory_region_init_alias(&s->bonito_localio, OBJECT(s), "isa_mmio", 753 get_system_io(), 0, BONITO_DEV_SIZE); 754 sysbus_init_mmio(sysbus, &s->bonito_localio); 755 sysbus_mmio_map(sysbus, 6, BONITO_DEV_BASE); 756 757 /* set the default value of north bridge pci config */ 758 pci_set_word(dev->config + PCI_COMMAND, 0x0000); 759 pci_set_word(dev->config + PCI_STATUS, 0x0000); 760 pci_set_word(dev->config + PCI_SUBSYSTEM_VENDOR_ID, 0x0000); 761 pci_set_word(dev->config + PCI_SUBSYSTEM_ID, 0x0000); 762 763 pci_set_byte(dev->config + PCI_INTERRUPT_LINE, 0x00); 764 pci_set_byte(dev->config + PCI_INTERRUPT_PIN, 0x01); 765 pci_set_byte(dev->config + PCI_MIN_GNT, 0x3c); 766 pci_set_byte(dev->config + PCI_MAX_LAT, 0x00); 767 768 qemu_register_reset(bonito_reset, s); 769 } 770 771 PCIBus *bonito_init(qemu_irq *pic) 772 { 773 DeviceState *dev; 774 BonitoState *pcihost; 775 PCIHostState *phb; 776 PCIBonitoState *s; 777 PCIDevice *d; 778 779 dev = qdev_create(NULL, TYPE_BONITO_PCI_HOST_BRIDGE); 780 phb = PCI_HOST_BRIDGE(dev); 781 pcihost = BONITO_PCI_HOST_BRIDGE(dev); 782 pcihost->pic = pic; 783 qdev_init_nofail(dev); 784 785 /* set the pcihost pointer before bonito_initfn is called */ 786 d = pci_create(phb->bus, PCI_DEVFN(0, 0), "Bonito"); 787 s = DO_UPCAST(PCIBonitoState, dev, d); 788 s->pcihost = pcihost; 789 pcihost->pci_dev = s; 790 qdev_init_nofail(DEVICE(d)); 791 792 return phb->bus; 793 } 794 795 static void bonito_class_init(ObjectClass *klass, void *data) 796 { 797 DeviceClass *dc = DEVICE_CLASS(klass); 798 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 799 800 k->realize = bonito_realize; 801 k->vendor_id = 0xdf53; 802 k->device_id = 0x00d5; 803 k->revision = 0x01; 804 k->class_id = PCI_CLASS_BRIDGE_HOST; 805 dc->desc = "Host bridge"; 806 dc->vmsd = &vmstate_bonito; 807 /* 808 * PCI-facing part of the host bridge, not usable without the 809 * host-facing part, which can't be device_add'ed, yet. 810 */ 811 dc->cannot_instantiate_with_device_add_yet = true; 812 } 813 814 static const TypeInfo bonito_info = { 815 .name = "Bonito", 816 .parent = TYPE_PCI_DEVICE, 817 .instance_size = sizeof(PCIBonitoState), 818 .class_init = bonito_class_init, 819 }; 820 821 static void bonito_pcihost_class_init(ObjectClass *klass, void *data) 822 { 823 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); 824 825 k->init = bonito_pcihost_initfn; 826 } 827 828 static const TypeInfo bonito_pcihost_info = { 829 .name = TYPE_BONITO_PCI_HOST_BRIDGE, 830 .parent = TYPE_PCI_HOST_BRIDGE, 831 .instance_size = sizeof(BonitoState), 832 .class_init = bonito_pcihost_class_init, 833 }; 834 835 static void bonito_register_types(void) 836 { 837 type_register_static(&bonito_pcihost_info); 838 type_register_static(&bonito_info); 839 } 840 841 type_init(bonito_register_types) 842