int spapr_populate_pci_dt(sPAPRPHBState *phb, uint32_t xics_phandle, void *fdt) { int bus_off, i, j, ret; char nodename[FDT_NAME_MAX]; uint32_t bus_range[] = { cpu_to_be32(0), cpu_to_be32(0xff) }; const uint64_t mmiosize = memory_region_size(&phb->memwindow); const uint64_t w32max = (1ULL << 32) - SPAPR_PCI_MEM_WIN_BUS_OFFSET; const uint64_t w32size = MIN(w32max, mmiosize); const uint64_t w64size = (mmiosize > w32size) ? (mmiosize - w32size) : 0; struct { uint32_t hi; uint64_t child; uint64_t parent; uint64_t size; } QEMU_PACKED ranges[] = { { cpu_to_be32(b_ss(1)), cpu_to_be64(0), cpu_to_be64(phb->io_win_addr), cpu_to_be64(memory_region_size(&phb->iospace)), }, { cpu_to_be32(b_ss(2)), cpu_to_be64(SPAPR_PCI_MEM_WIN_BUS_OFFSET), cpu_to_be64(phb->mem_win_addr), cpu_to_be64(w32size), }, { cpu_to_be32(b_ss(3)), cpu_to_be64(1ULL << 32), cpu_to_be64(phb->mem_win_addr + w32size), cpu_to_be64(w64size) }, }; const unsigned sizeof_ranges = (w64size ? 3 : 2) * sizeof(ranges[0]); uint64_t bus_reg[] = { cpu_to_be64(phb->buid), 0 }; uint32_t interrupt_map_mask[] = { cpu_to_be32(b_ddddd(-1)|b_fff(0)), 0x0, 0x0, cpu_to_be32(-1)}; uint32_t interrupt_map[PCI_SLOT_MAX * PCI_NUM_PINS][7]; uint32_t ddw_applicable[] = { cpu_to_be32(RTAS_IBM_QUERY_PE_DMA_WINDOW), cpu_to_be32(RTAS_IBM_CREATE_PE_DMA_WINDOW), cpu_to_be32(RTAS_IBM_REMOVE_PE_DMA_WINDOW) }; uint32_t ddw_extensions[] = { cpu_to_be32(1), cpu_to_be32(RTAS_IBM_RESET_PE_DMA_WINDOW) }; uint32_t associativity[] = {cpu_to_be32(0x4), cpu_to_be32(0x0), cpu_to_be32(0x0), cpu_to_be32(0x0), cpu_to_be32(phb->numa_node)}; sPAPRTCETable *tcet; PCIBus *bus = PCI_HOST_BRIDGE(phb)->bus; sPAPRFDT s_fdt; /* Start populating the FDT */ snprintf(nodename, FDT_NAME_MAX, "pci@%" PRIx64, phb->buid); bus_off = fdt_add_subnode(fdt, 0, nodename); if (bus_off < 0) { return bus_off; } /* Write PHB properties */ _FDT(fdt_setprop_string(fdt, bus_off, "device_type", "pci")); _FDT(fdt_setprop_string(fdt, bus_off, "compatible", "IBM,Logical_PHB")); _FDT(fdt_setprop_cell(fdt, bus_off, "#address-cells", 0x3)); _FDT(fdt_setprop_cell(fdt, bus_off, "#size-cells", 0x2)); _FDT(fdt_setprop_cell(fdt, bus_off, "#interrupt-cells", 0x1)); _FDT(fdt_setprop(fdt, bus_off, "used-by-rtas", NULL, 0)); _FDT(fdt_setprop(fdt, bus_off, "bus-range", &bus_range, sizeof(bus_range))); _FDT(fdt_setprop(fdt, bus_off, "ranges", &ranges, sizeof_ranges)); _FDT(fdt_setprop(fdt, bus_off, "reg", &bus_reg, sizeof(bus_reg))); _FDT(fdt_setprop_cell(fdt, bus_off, "ibm,pci-config-space-type", 0x1)); _FDT(fdt_setprop_cell(fdt, bus_off, "ibm,pe-total-#msi", XICS_IRQS_SPAPR)); /* Dynamic DMA window */ if (phb->ddw_enabled) { _FDT(fdt_setprop(fdt, bus_off, "ibm,ddw-applicable", &ddw_applicable, sizeof(ddw_applicable))); _FDT(fdt_setprop(fdt, bus_off, "ibm,ddw-extensions", &ddw_extensions, sizeof(ddw_extensions))); } /* Advertise NUMA via ibm,associativity */ if (nb_numa_nodes > 1) { _FDT(fdt_setprop(fdt, bus_off, "ibm,associativity", associativity, sizeof(associativity))); } /* Build the interrupt-map, this must matches what is done * in pci_spapr_map_irq */ _FDT(fdt_setprop(fdt, bus_off, "interrupt-map-mask", &interrupt_map_mask, sizeof(interrupt_map_mask))); for (i = 0; i < PCI_SLOT_MAX; i++) { for (j = 0; j < PCI_NUM_PINS; j++) { uint32_t *irqmap = interrupt_map[i*PCI_NUM_PINS + j]; int lsi_num = pci_spapr_swizzle(i, j); irqmap[0] = cpu_to_be32(b_ddddd(i)|b_fff(0)); irqmap[1] = 0; irqmap[2] = 0; irqmap[3] = cpu_to_be32(j+1); irqmap[4] = cpu_to_be32(xics_phandle); irqmap[5] = cpu_to_be32(phb->lsi_table[lsi_num].irq); irqmap[6] = cpu_to_be32(0x8); } } /* Write interrupt map */ _FDT(fdt_setprop(fdt, bus_off, "interrupt-map", &interrupt_map, sizeof(interrupt_map))); tcet = spapr_tce_find_by_liobn(phb->dma_liobn[0]); if (!tcet) { return -1; } spapr_dma_dt(fdt, bus_off, "ibm,dma-window", tcet->liobn, tcet->bus_offset, tcet->nb_table << tcet->page_shift); /* Walk the bridges and program the bus numbers*/ spapr_phb_pci_enumerate(phb); _FDT(fdt_setprop_cell(fdt, bus_off, "qemu,phb-enumerated", 0x1)); /* Populate tree nodes with PCI devices attached */ s_fdt.fdt = fdt; s_fdt.node_off = bus_off; s_fdt.sphb = phb; pci_for_each_device(bus, pci_bus_num(bus), spapr_populate_pci_devices_dt, &s_fdt); ret = spapr_drc_populate_dt(fdt, bus_off, OBJECT(phb), SPAPR_DR_CONNECTOR_TYPE_PCI); if (ret) { return ret; } return 0; }