PCIBus *typhoon_init(ram_addr_t ram_size, ISABus **isa_bus, qemu_irq *p_rtc_irq, AlphaCPU *cpus[4], pci_map_irq_fn sys_map_irq) { const uint64_t MB = 1024 * 1024; const uint64_t GB = 1024 * MB; MemoryRegion *addr_space = get_system_memory(); DeviceState *dev; TyphoonState *s; PCIHostState *phb; PCIBus *b; int i; dev = qdev_create(NULL, TYPE_TYPHOON_PCI_HOST_BRIDGE); qdev_init_nofail(dev); s = TYPHOON_PCI_HOST_BRIDGE(dev); phb = PCI_HOST_BRIDGE(dev); /* Remember the CPUs so that we can deliver interrupts to them. */ for (i = 0; i < 4; i++) { AlphaCPU *cpu = cpus[i]; s->cchip.cpu[i] = cpu; if (cpu != NULL) { cpu->alarm_timer = qemu_new_timer_ns(rtc_clock, typhoon_alarm_timer, (void *)((uintptr_t)s + i)); } } *p_rtc_irq = *qemu_allocate_irqs(typhoon_set_timer_irq, s, 1); /* Main memory region, 0x00.0000.0000. Real hardware supports 32GB, but the address space hole reserved at this point is 8TB. */ memory_region_init_ram(&s->ram_region, OBJECT(s), "ram", ram_size); vmstate_register_ram_global(&s->ram_region); memory_region_add_subregion(addr_space, 0, &s->ram_region); /* TIGbus, 0x801.0000.0000, 1GB. */ /* ??? The TIGbus is used for delivering interrupts, and access to the flash ROM. I'm not sure that we need to implement it at all. */ /* Pchip0 CSRs, 0x801.8000.0000, 256MB. */ memory_region_init_io(&s->pchip.region, OBJECT(s), &pchip_ops, s, "pchip0", 256*MB); memory_region_add_subregion(addr_space, 0x80180000000ULL, &s->pchip.region); /* Cchip CSRs, 0x801.A000.0000, 256MB. */ memory_region_init_io(&s->cchip.region, OBJECT(s), &cchip_ops, s, "cchip0", 256*MB); memory_region_add_subregion(addr_space, 0x801a0000000ULL, &s->cchip.region); /* Dchip CSRs, 0x801.B000.0000, 256MB. */ memory_region_init_io(&s->dchip_region, OBJECT(s), &dchip_ops, s, "dchip0", 256*MB); memory_region_add_subregion(addr_space, 0x801b0000000ULL, &s->dchip_region); /* Pchip0 PCI memory, 0x800.0000.0000, 4GB. */ memory_region_init(&s->pchip.reg_mem, OBJECT(s), "pci0-mem", 4*GB); memory_region_add_subregion(addr_space, 0x80000000000ULL, &s->pchip.reg_mem); /* Pchip0 PCI I/O, 0x801.FC00.0000, 32MB. */ memory_region_init(&s->pchip.reg_io, OBJECT(s), "pci0-io", 32*MB); memory_region_add_subregion(addr_space, 0x801fc000000ULL, &s->pchip.reg_io); b = pci_register_bus(dev, "pci", typhoon_set_irq, sys_map_irq, s, &s->pchip.reg_mem, &s->pchip.reg_io, 0, 64, TYPE_PCI_BUS); phb->bus = b; /* Pchip0 PCI special/interrupt acknowledge, 0x801.F800.0000, 64MB. */ memory_region_init_io(&s->pchip.reg_iack, OBJECT(s), &alpha_pci_iack_ops, b, "pci0-iack", 64*MB); memory_region_add_subregion(addr_space, 0x801f8000000ULL, &s->pchip.reg_iack); /* Pchip0 PCI configuration, 0x801.FE00.0000, 16MB. */ memory_region_init_io(&s->pchip.reg_conf, OBJECT(s), &alpha_pci_conf1_ops, b, "pci0-conf", 16*MB); memory_region_add_subregion(addr_space, 0x801fe000000ULL, &s->pchip.reg_conf); /* For the record, these are the mappings for the second PCI bus. We can get away with not implementing them because we indicate via the Cchip.CSC<PIP> bit that Pchip1 is not present. */ /* Pchip1 PCI memory, 0x802.0000.0000, 4GB. */ /* Pchip1 CSRs, 0x802.8000.0000, 256MB. */ /* Pchip1 PCI special/interrupt acknowledge, 0x802.F800.0000, 64MB. */ /* Pchip1 PCI I/O, 0x802.FC00.0000, 32MB. */ /* Pchip1 PCI configuration, 0x802.FE00.0000, 16MB. */ /* Init the ISA bus. */ /* ??? Technically there should be a cy82c693ub pci-isa bridge. */ { qemu_irq isa_pci_irq, *isa_irqs; *isa_bus = isa_bus_new(NULL, &s->pchip.reg_io); isa_pci_irq = *qemu_allocate_irqs(typhoon_set_isa_irq, s, 1); isa_irqs = i8259_init(*isa_bus, isa_pci_irq); isa_bus_irqs(*isa_bus, isa_irqs); } return b; }