/* * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator * * Copyright (c) 2004-2007 Fabrice Bellard * Copyright (c) 2007 Jocelyn Mayer * Copyright (c) 2010 David Gibson, IBM Corporation. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * */ #include "qemu/osdep.h" #include "qapi/error.h" #include "qapi/visitor.h" #include "sysemu/sysemu.h" #include "sysemu/numa.h" #include "hw/hw.h" #include "qemu/log.h" #include "hw/fw-path-provider.h" #include "elf.h" #include "net/net.h" #include "sysemu/device_tree.h" #include "sysemu/cpus.h" #include "sysemu/hw_accel.h" #include "kvm_ppc.h" #include "migration/misc.h" #include "migration/global_state.h" #include "migration/register.h" #include "mmu-hash64.h" #include "mmu-book3s-v3.h" #include "cpu-models.h" #include "qom/cpu.h" #include "hw/boards.h" #include "hw/ppc/ppc.h" #include "hw/loader.h" #include "hw/ppc/fdt.h" #include "hw/ppc/spapr.h" #include "hw/ppc/spapr_vio.h" #include "hw/pci-host/spapr.h" #include "hw/pci/msi.h" #include "hw/pci/pci.h" #include "hw/scsi/scsi.h" #include "hw/virtio/virtio-scsi.h" #include "hw/virtio/vhost-scsi-common.h" #include "exec/address-spaces.h" #include "exec/ram_addr.h" #include "hw/usb.h" #include "qemu/config-file.h" #include "qemu/error-report.h" #include "trace.h" #include "hw/nmi.h" #include "hw/intc/intc.h" #include "qemu/cutils.h" #include "hw/ppc/spapr_cpu_core.h" #include "hw/mem/memory-device.h" #include /* SLOF memory layout: * * SLOF raw image loaded at 0, copies its romfs right below the flat * device-tree, then position SLOF itself 31M below that * * So we set FW_OVERHEAD to 40MB which should account for all of that * and more * * We load our kernel at 4M, leaving space for SLOF initial image */ #define FDT_MAX_SIZE 0x100000 #define RTAS_MAX_SIZE 0x10000 #define RTAS_MAX_ADDR 0x80000000 /* RTAS must stay below that */ #define FW_MAX_SIZE 0x400000 #define FW_FILE_NAME "slof.bin" #define FW_OVERHEAD 0x2800000 #define KERNEL_LOAD_ADDR FW_MAX_SIZE #define MIN_RMA_SLOF 128UL #define PHANDLE_XICP 0x00001111 /* These two functions implement the VCPU id numbering: one to compute them * all and one to identify thread 0 of a VCORE. Any change to the first one * is likely to have an impact on the second one, so let's keep them close. */ static int spapr_vcpu_id(sPAPRMachineState *spapr, int cpu_index) { assert(spapr->vsmt); return (cpu_index / smp_threads) * spapr->vsmt + cpu_index % smp_threads; } static bool spapr_is_thread0_in_vcore(sPAPRMachineState *spapr, PowerPCCPU *cpu) { assert(spapr->vsmt); return spapr_get_vcpu_id(cpu) % spapr->vsmt == 0; } static bool pre_2_10_vmstate_dummy_icp_needed(void *opaque) { /* Dummy entries correspond to unused ICPState objects in older QEMUs, * and newer QEMUs don't even have them. In both cases, we don't want * to send anything on the wire. */ return false; } static const VMStateDescription pre_2_10_vmstate_dummy_icp = { .name = "icp/server", .version_id = 1, .minimum_version_id = 1, .needed = pre_2_10_vmstate_dummy_icp_needed, .fields = (VMStateField[]) { VMSTATE_UNUSED(4), /* uint32_t xirr */ VMSTATE_UNUSED(1), /* uint8_t pending_priority */ VMSTATE_UNUSED(1), /* uint8_t mfrr */ VMSTATE_END_OF_LIST() }, }; static void pre_2_10_vmstate_register_dummy_icp(int i) { vmstate_register(NULL, i, &pre_2_10_vmstate_dummy_icp, (void *)(uintptr_t) i); } static void pre_2_10_vmstate_unregister_dummy_icp(int i) { vmstate_unregister(NULL, &pre_2_10_vmstate_dummy_icp, (void *)(uintptr_t) i); } int spapr_max_server_number(sPAPRMachineState *spapr) { assert(spapr->vsmt); return DIV_ROUND_UP(max_cpus * spapr->vsmt, smp_threads); } static int spapr_fixup_cpu_smt_dt(void *fdt, int offset, PowerPCCPU *cpu, int smt_threads) { int i, ret = 0; uint32_t servers_prop[smt_threads]; uint32_t gservers_prop[smt_threads * 2]; int index = spapr_get_vcpu_id(cpu); if (cpu->compat_pvr) { ret = fdt_setprop_cell(fdt, offset, "cpu-version", cpu->compat_pvr); if (ret < 0) { return ret; } } /* Build interrupt servers and gservers properties */ for (i = 0; i < smt_threads; i++) { servers_prop[i] = cpu_to_be32(index + i); /* Hack, direct the group queues back to cpu 0 */ gservers_prop[i*2] = cpu_to_be32(index + i); gservers_prop[i*2 + 1] = 0; } ret = fdt_setprop(fdt, offset, "ibm,ppc-interrupt-server#s", servers_prop, sizeof(servers_prop)); if (ret < 0) { return ret; } ret = fdt_setprop(fdt, offset, "ibm,ppc-interrupt-gserver#s", gservers_prop, sizeof(gservers_prop)); return ret; } static int spapr_fixup_cpu_numa_dt(void *fdt, int offset, PowerPCCPU *cpu) { int index = spapr_get_vcpu_id(cpu); uint32_t associativity[] = {cpu_to_be32(0x5), cpu_to_be32(0x0), cpu_to_be32(0x0), cpu_to_be32(0x0), cpu_to_be32(cpu->node_id), cpu_to_be32(index)}; /* Advertise NUMA via ibm,associativity */ return fdt_setprop(fdt, offset, "ibm,associativity", associativity, sizeof(associativity)); } /* Populate the "ibm,pa-features" property */ static void spapr_populate_pa_features(sPAPRMachineState *spapr, PowerPCCPU *cpu, void *fdt, int offset, bool legacy_guest) { uint8_t pa_features_206[] = { 6, 0, 0xf6, 0x1f, 0xc7, 0x00, 0x80, 0xc0 }; uint8_t pa_features_207[] = { 24, 0, 0xf6, 0x1f, 0xc7, 0xc0, 0x80, 0xf0, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00 }; uint8_t pa_features_300[] = { 66, 0, /* 0: MMU|FPU|SLB|RUN|DABR|NX, 1: fri[nzpm]|DABRX|SPRG3|SLB0|PP110 */ /* 2: VPM|DS205|PPR|DS202|DS206, 3: LSD|URG, SSO, 5: LE|CFAR|EB|LSQ */ 0xf6, 0x1f, 0xc7, 0xc0, 0x80, 0xf0, /* 0 - 5 */ /* 6: DS207 */ 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, /* 6 - 11 */ /* 16: Vector */ 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, /* 12 - 17 */ /* 18: Vec. Scalar, 20: Vec. XOR, 22: HTM */ 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 18 - 23 */ /* 24: Ext. Dec, 26: 64 bit ftrs, 28: PM ftrs */ 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 24 - 29 */ /* 30: MMR, 32: LE atomic, 34: EBB + ext EBB */ 0x80, 0x00, 0x80, 0x00, 0xC0, 0x00, /* 30 - 35 */ /* 36: SPR SO, 38: Copy/Paste, 40: Radix MMU */ 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 36 - 41 */ /* 42: PM, 44: PC RA, 46: SC vec'd */ 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 42 - 47 */ /* 48: SIMD, 50: QP BFP, 52: String */ 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 48 - 53 */ /* 54: DecFP, 56: DecI, 58: SHA */ 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 54 - 59 */ /* 60: NM atomic, 62: RNG */ 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 60 - 65 */ }; uint8_t *pa_features = NULL; size_t pa_size; if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_2_06, 0, cpu->compat_pvr)) { pa_features = pa_features_206; pa_size = sizeof(pa_features_206); } if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_2_07, 0, cpu->compat_pvr)) { pa_features = pa_features_207; pa_size = sizeof(pa_features_207); } if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_00, 0, cpu->compat_pvr)) { pa_features = pa_features_300; pa_size = sizeof(pa_features_300); } if (!pa_features) { return; } if (ppc_hash64_has(cpu, PPC_HASH64_CI_LARGEPAGE)) { /* * Note: we keep CI large pages off by default because a 64K capable * guest provisioned with large pages might otherwise try to map a qemu * framebuffer (or other kind of memory mapped PCI BAR) using 64K pages * even if that qemu runs on a 4k host. * We dd this bit back here if we are confident this is not an issue */ pa_features[3] |= 0x20; } if ((spapr_get_cap(spapr, SPAPR_CAP_HTM) != 0) && pa_size > 24) { pa_features[24] |= 0x80; /* Transactional memory support */ } if (legacy_guest && pa_size > 40) { /* Workaround for broken kernels that attempt (guest) radix * mode when they can't handle it, if they see the radix bit set * in pa-features. So hide it from them. */ pa_features[40 + 2] &= ~0x80; /* Radix MMU */ } _FDT((fdt_setprop(fdt, offset, "ibm,pa-features", pa_features, pa_size))); } static int spapr_fixup_cpu_dt(void *fdt, sPAPRMachineState *spapr) { int ret = 0, offset, cpus_offset; CPUState *cs; char cpu_model[32]; uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)}; CPU_FOREACH(cs) { PowerPCCPU *cpu = POWERPC_CPU(cs); DeviceClass *dc = DEVICE_GET_CLASS(cs); int index = spapr_get_vcpu_id(cpu); int compat_smt = MIN(smp_threads, ppc_compat_max_vthreads(cpu)); if (!spapr_is_thread0_in_vcore(spapr, cpu)) { continue; } snprintf(cpu_model, 32, "%s@%x", dc->fw_name, index); cpus_offset = fdt_path_offset(fdt, "/cpus"); if (cpus_offset < 0) { cpus_offset = fdt_add_subnode(fdt, 0, "cpus"); if (cpus_offset < 0) { return cpus_offset; } } offset = fdt_subnode_offset(fdt, cpus_offset, cpu_model); if (offset < 0) { offset = fdt_add_subnode(fdt, cpus_offset, cpu_model); if (offset < 0) { return offset; } } ret = fdt_setprop(fdt, offset, "ibm,pft-size", pft_size_prop, sizeof(pft_size_prop)); if (ret < 0) { return ret; } if (nb_numa_nodes > 1) { ret = spapr_fixup_cpu_numa_dt(fdt, offset, cpu); if (ret < 0) { return ret; } } ret = spapr_fixup_cpu_smt_dt(fdt, offset, cpu, compat_smt); if (ret < 0) { return ret; } spapr_populate_pa_features(spapr, cpu, fdt, offset, spapr->cas_legacy_guest_workaround); } return ret; } static hwaddr spapr_node0_size(MachineState *machine) { if (nb_numa_nodes) { int i; for (i = 0; i < nb_numa_nodes; ++i) { if (numa_info[i].node_mem) { return MIN(pow2floor(numa_info[i].node_mem), machine->ram_size); } } } return machine->ram_size; } static void add_str(GString *s, const gchar *s1) { g_string_append_len(s, s1, strlen(s1) + 1); } static int spapr_populate_memory_node(void *fdt, int nodeid, hwaddr start, hwaddr size) { uint32_t associativity[] = { cpu_to_be32(0x4), /* length */ cpu_to_be32(0x0), cpu_to_be32(0x0), cpu_to_be32(0x0), cpu_to_be32(nodeid) }; char mem_name[32]; uint64_t mem_reg_property[2]; int off; mem_reg_property[0] = cpu_to_be64(start); mem_reg_property[1] = cpu_to_be64(size); sprintf(mem_name, "memory@" TARGET_FMT_lx, start); off = fdt_add_subnode(fdt, 0, mem_name); _FDT(off); _FDT((fdt_setprop_string(fdt, off, "device_type", "memory"))); _FDT((fdt_setprop(fdt, off, "reg", mem_reg_property, sizeof(mem_reg_property)))); _FDT((fdt_setprop(fdt, off, "ibm,associativity", associativity, sizeof(associativity)))); return off; } static int spapr_populate_memory(sPAPRMachineState *spapr, void *fdt) { MachineState *machine = MACHINE(spapr); hwaddr mem_start, node_size; int i, nb_nodes = nb_numa_nodes; NodeInfo *nodes = numa_info; NodeInfo ramnode; /* No NUMA nodes, assume there is just one node with whole RAM */ if (!nb_numa_nodes) { nb_nodes = 1; ramnode.node_mem = machine->ram_size; nodes = &ramnode; } for (i = 0, mem_start = 0; i < nb_nodes; ++i) { if (!nodes[i].node_mem) { continue; } if (mem_start >= machine->ram_size) { node_size = 0; } else { node_size = nodes[i].node_mem; if (node_size > machine->ram_size - mem_start) { node_size = machine->ram_size - mem_start; } } if (!mem_start) { /* spapr_machine_init() checks for rma_size <= node0_size * already */ spapr_populate_memory_node(fdt, i, 0, spapr->rma_size); mem_start += spapr->rma_size; node_size -= spapr->rma_size; } for ( ; node_size; ) { hwaddr sizetmp = pow2floor(node_size); /* mem_start != 0 here */ if (ctzl(mem_start) < ctzl(sizetmp)) { sizetmp = 1ULL << ctzl(mem_start); } spapr_populate_memory_node(fdt, i, mem_start, sizetmp); node_size -= sizetmp; mem_start += sizetmp; } } return 0; } static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset, sPAPRMachineState *spapr) { PowerPCCPU *cpu = POWERPC_CPU(cs); CPUPPCState *env = &cpu->env; PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); int index = spapr_get_vcpu_id(cpu); uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40), 0xffffffff, 0xffffffff}; uint32_t tbfreq = kvm_enabled() ? kvmppc_get_tbfreq() : SPAPR_TIMEBASE_FREQ; uint32_t cpufreq = kvm_enabled() ? kvmppc_get_clockfreq() : 1000000000; uint32_t page_sizes_prop[64]; size_t page_sizes_prop_size; uint32_t vcpus_per_socket = smp_threads * smp_cores; uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)}; int compat_smt = MIN(smp_threads, ppc_compat_max_vthreads(cpu)); sPAPRDRConnector *drc; int drc_index; uint32_t radix_AP_encodings[PPC_PAGE_SIZES_MAX_SZ]; int i; drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, index); if (drc) { drc_index = spapr_drc_index(drc); _FDT((fdt_setprop_cell(fdt, offset, "ibm,my-drc-index", drc_index))); } _FDT((fdt_setprop_cell(fdt, offset, "reg", index))); _FDT((fdt_setprop_string(fdt, offset, "device_type", "cpu"))); _FDT((fdt_setprop_cell(fdt, offset, "cpu-version", env->spr[SPR_PVR]))); _FDT((fdt_setprop_cell(fdt, offset, "d-cache-block-size", env->dcache_line_size))); _FDT((fdt_setprop_cell(fdt, offset, "d-cache-line-size", env->dcache_line_size))); _FDT((fdt_setprop_cell(fdt, offset, "i-cache-block-size", env->icache_line_size))); _FDT((fdt_setprop_cell(fdt, offset, "i-cache-line-size", env->icache_line_size))); if (pcc->l1_dcache_size) { _FDT((fdt_setprop_cell(fdt, offset, "d-cache-size", pcc->l1_dcache_size))); } else { warn_report("Unknown L1 dcache size for cpu"); } if (pcc->l1_icache_size) { _FDT((fdt_setprop_cell(fdt, offset, "i-cache-size", pcc->l1_icache_size))); } else { warn_report("Unknown L1 icache size for cpu"); } _FDT((fdt_setprop_cell(fdt, offset, "timebase-frequency", tbfreq))); _FDT((fdt_setprop_cell(fdt, offset, "clock-frequency", cpufreq))); _FDT((fdt_setprop_cell(fdt, offset, "slb-size", cpu->hash64_opts->slb_size))); _FDT((fdt_setprop_cell(fdt, offset, "ibm,slb-size", cpu->hash64_opts->slb_size))); _FDT((fdt_setprop_string(fdt, offset, "status", "okay"))); _FDT((fdt_setprop(fdt, offset, "64-bit", NULL, 0))); if (env->spr_cb[SPR_PURR].oea_read) { _FDT((fdt_setprop(fdt, offset, "ibm,purr", NULL, 0))); } if (ppc_hash64_has(cpu, PPC_HASH64_1TSEG)) { _FDT((fdt_setprop(fdt, offset, "ibm,processor-segment-sizes", segs, sizeof(segs)))); } /* Advertise VSX (vector extensions) if available * 1 == VMX / Altivec available * 2 == VSX available * * Only CPUs for which we create core types in spapr_cpu_core.c * are possible, and all of those have VMX */ if (spapr_get_cap(spapr, SPAPR_CAP_VSX) != 0) { _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 2))); } else { _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 1))); } /* Advertise DFP (Decimal Floating Point) if available * 0 / no property == no DFP * 1 == DFP available */ if (spapr_get_cap(spapr, SPAPR_CAP_DFP) != 0) { _FDT((fdt_setprop_cell(fdt, offset, "ibm,dfp", 1))); } page_sizes_prop_size = ppc_create_page_sizes_prop(cpu, page_sizes_prop, sizeof(page_sizes_prop)); if (page_sizes_prop_size) { _FDT((fdt_setprop(fdt, offset, "ibm,segment-page-sizes", page_sizes_prop, page_sizes_prop_size))); } spapr_populate_pa_features(spapr, cpu, fdt, offset, false); _FDT((fdt_setprop_cell(fdt, offset, "ibm,chip-id", cs->cpu_index / vcpus_per_socket))); _FDT((fdt_setprop(fdt, offset, "ibm,pft-size", pft_size_prop, sizeof(pft_size_prop)))); if (nb_numa_nodes > 1) { _FDT(spapr_fixup_cpu_numa_dt(fdt, offset, cpu)); } _FDT(spapr_fixup_cpu_smt_dt(fdt, offset, cpu, compat_smt)); if (pcc->radix_page_info) { for (i = 0; i < pcc->radix_page_info->count; i++) { radix_AP_encodings[i] = cpu_to_be32(pcc->radix_page_info->entries[i]); } _FDT((fdt_setprop(fdt, offset, "ibm,processor-radix-AP-encodings", radix_AP_encodings, pcc->radix_page_info->count * sizeof(radix_AP_encodings[0])))); } } static void spapr_populate_cpus_dt_node(void *fdt, sPAPRMachineState *spapr) { CPUState **rev; CPUState *cs; int n_cpus; int cpus_offset; char *nodename; int i; cpus_offset = fdt_add_subnode(fdt, 0, "cpus"); _FDT(cpus_offset); _FDT((fdt_setprop_cell(fdt, cpus_offset, "#address-cells", 0x1))); _FDT((fdt_setprop_cell(fdt, cpus_offset, "#size-cells", 0x0))); /* * We walk the CPUs in reverse order to ensure that CPU DT nodes * created by fdt_add_subnode() end up in the right order in FDT * for the guest kernel the enumerate the CPUs correctly. * * The CPU list cannot be traversed in reverse order, so we need * to do extra work. */ n_cpus = 0; rev = NULL; CPU_FOREACH(cs) { rev = g_renew(CPUState *, rev, n_cpus + 1); rev[n_cpus++] = cs; } for (i = n_cpus - 1; i >= 0; i--) { CPUState *cs = rev[i]; PowerPCCPU *cpu = POWERPC_CPU(cs); int index = spapr_get_vcpu_id(cpu); DeviceClass *dc = DEVICE_GET_CLASS(cs); int offset; if (!spapr_is_thread0_in_vcore(spapr, cpu)) { continue; } nodename = g_strdup_printf("%s@%x", dc->fw_name, index); offset = fdt_add_subnode(fdt, cpus_offset, nodename); g_free(nodename); _FDT(offset); spapr_populate_cpu_dt(cs, fdt, offset, spapr); } g_free(rev); } static int spapr_rng_populate_dt(void *fdt) { int node; int ret; node = qemu_fdt_add_subnode(fdt, "/ibm,platform-facilities"); if (node <= 0) { return -1; } ret = fdt_setprop_string(fdt, node, "device_type", "ibm,platform-facilities"); ret |= fdt_setprop_cell(fdt, node, "#address-cells", 0x1); ret |= fdt_setprop_cell(fdt, node, "#size-cells", 0x0); node = fdt_add_subnode(fdt, node, "ibm,random-v1"); if (node <= 0) { return -1; } ret |= fdt_setprop_string(fdt, node, "compatible", "ibm,random"); return ret ? -1 : 0; } static uint32_t spapr_pc_dimm_node(MemoryDeviceInfoList *list, ram_addr_t addr) { MemoryDeviceInfoList *info; for (info = list; info; info = info->next) { MemoryDeviceInfo *value = info->value; if (value && value->type == MEMORY_DEVICE_INFO_KIND_DIMM) { PCDIMMDeviceInfo *pcdimm_info = value->u.dimm.data; if (addr >= pcdimm_info->addr && addr < (pcdimm_info->addr + pcdimm_info->size)) { return pcdimm_info->node; } } } return -1; } struct sPAPRDrconfCellV2 { uint32_t seq_lmbs; uint64_t base_addr; uint32_t drc_index; uint32_t aa_index; uint32_t flags; } QEMU_PACKED; typedef struct DrconfCellQueue { struct sPAPRDrconfCellV2 cell; QSIMPLEQ_ENTRY(DrconfCellQueue) entry; } DrconfCellQueue; static DrconfCellQueue * spapr_get_drconf_cell(uint32_t seq_lmbs, uint64_t base_addr, uint32_t drc_index, uint32_t aa_index, uint32_t flags) { DrconfCellQueue *elem; elem = g_malloc0(sizeof(*elem)); elem->cell.seq_lmbs = cpu_to_be32(seq_lmbs); elem->cell.base_addr = cpu_to_be64(base_addr); elem->cell.drc_index = cpu_to_be32(drc_index); elem->cell.aa_index = cpu_to_be32(aa_index); elem->cell.flags = cpu_to_be32(flags); return elem; } /* ibm,dynamic-memory-v2 */ static int spapr_populate_drmem_v2(sPAPRMachineState *spapr, void *fdt, int offset, MemoryDeviceInfoList *dimms) { MachineState *machine = MACHINE(spapr); uint8_t *int_buf, *cur_index, buf_len; int ret; uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; uint64_t addr, cur_addr, size; uint32_t nr_boot_lmbs = (machine->device_memory->base / lmb_size); uint64_t mem_end = machine->device_memory->base + memory_region_size(&machine->device_memory->mr); uint32_t node, nr_entries = 0; sPAPRDRConnector *drc; DrconfCellQueue *elem, *next; MemoryDeviceInfoList *info; QSIMPLEQ_HEAD(, DrconfCellQueue) drconf_queue = QSIMPLEQ_HEAD_INITIALIZER(drconf_queue); /* Entry to cover RAM and the gap area */ elem = spapr_get_drconf_cell(nr_boot_lmbs, 0, 0, -1, SPAPR_LMB_FLAGS_RESERVED | SPAPR_LMB_FLAGS_DRC_INVALID); QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); nr_entries++; cur_addr = machine->device_memory->base; for (info = dimms; info; info = info->next) { PCDIMMDeviceInfo *di = info->value->u.dimm.data; addr = di->addr; size = di->size; node = di->node; /* Entry for hot-pluggable area */ if (cur_addr < addr) { drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, cur_addr / lmb_size); g_assert(drc); elem = spapr_get_drconf_cell((addr - cur_addr) / lmb_size, cur_addr, spapr_drc_index(drc), -1, 0); QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); nr_entries++; } /* Entry for DIMM */ drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, addr / lmb_size); g_assert(drc); elem = spapr_get_drconf_cell(size / lmb_size, addr, spapr_drc_index(drc), node, SPAPR_LMB_FLAGS_ASSIGNED); QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); nr_entries++; cur_addr = addr + size; } /* Entry for remaining hotpluggable area */ if (cur_addr < mem_end) { drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, cur_addr / lmb_size); g_assert(drc); elem = spapr_get_drconf_cell((mem_end - cur_addr) / lmb_size, cur_addr, spapr_drc_index(drc), -1, 0); QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); nr_entries++; } buf_len = nr_entries * sizeof(struct sPAPRDrconfCellV2) + sizeof(uint32_t); int_buf = cur_index = g_malloc0(buf_len); *(uint32_t *)int_buf = cpu_to_be32(nr_entries); cur_index += sizeof(nr_entries); QSIMPLEQ_FOREACH_SAFE(elem, &drconf_queue, entry, next) { memcpy(cur_index, &elem->cell, sizeof(elem->cell)); cur_index += sizeof(elem->cell); QSIMPLEQ_REMOVE(&drconf_queue, elem, DrconfCellQueue, entry); g_free(elem); } ret = fdt_setprop(fdt, offset, "ibm,dynamic-memory-v2", int_buf, buf_len); g_free(int_buf); if (ret < 0) { return -1; } return 0; } /* ibm,dynamic-memory */ static int spapr_populate_drmem_v1(sPAPRMachineState *spapr, void *fdt, int offset, MemoryDeviceInfoList *dimms) { MachineState *machine = MACHINE(spapr); int i, ret; uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; uint32_t device_lmb_start = machine->device_memory->base / lmb_size; uint32_t nr_lmbs = (machine->device_memory->base + memory_region_size(&machine->device_memory->mr)) / lmb_size; uint32_t *int_buf, *cur_index, buf_len; /* * Allocate enough buffer size to fit in ibm,dynamic-memory */ buf_len = (nr_lmbs * SPAPR_DR_LMB_LIST_ENTRY_SIZE + 1) * sizeof(uint32_t); cur_index = int_buf = g_malloc0(buf_len); int_buf[0] = cpu_to_be32(nr_lmbs); cur_index++; for (i = 0; i < nr_lmbs; i++) { uint64_t addr = i * lmb_size; uint32_t *dynamic_memory = cur_index; if (i >= device_lmb_start) { sPAPRDRConnector *drc; drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, i); g_assert(drc); dynamic_memory[0] = cpu_to_be32(addr >> 32); dynamic_memory[1] = cpu_to_be32(addr & 0xffffffff); dynamic_memory[2] = cpu_to_be32(spapr_drc_index(drc)); dynamic_memory[3] = cpu_to_be32(0); /* reserved */ dynamic_memory[4] = cpu_to_be32(spapr_pc_dimm_node(dimms, addr)); if (memory_region_present(get_system_memory(), addr)) { dynamic_memory[5] = cpu_to_be32(SPAPR_LMB_FLAGS_ASSIGNED); } else { dynamic_memory[5] = cpu_to_be32(0); } } else { /* * LMB information for RMA, boot time RAM and gap b/n RAM and * device memory region -- all these are marked as reserved * and as having no valid DRC. */ dynamic_memory[0] = cpu_to_be32(addr >> 32); dynamic_memory[1] = cpu_to_be32(addr & 0xffffffff); dynamic_memory[2] = cpu_to_be32(0); dynamic_memory[3] = cpu_to_be32(0); /* reserved */ dynamic_memory[4] = cpu_to_be32(-1); dynamic_memory[5] = cpu_to_be32(SPAPR_LMB_FLAGS_RESERVED | SPAPR_LMB_FLAGS_DRC_INVALID); } cur_index += SPAPR_DR_LMB_LIST_ENTRY_SIZE; } ret = fdt_setprop(fdt, offset, "ibm,dynamic-memory", int_buf, buf_len); g_free(int_buf); if (ret < 0) { return -1; } return 0; } /* * Adds ibm,dynamic-reconfiguration-memory node. * Refer to docs/specs/ppc-spapr-hotplug.txt for the documentation * of this device tree node. */ static int spapr_populate_drconf_memory(sPAPRMachineState *spapr, void *fdt) { MachineState *machine = MACHINE(spapr); int ret, i, offset; uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; uint32_t prop_lmb_size[] = {0, cpu_to_be32(lmb_size)}; uint32_t *int_buf, *cur_index, buf_len; int nr_nodes = nb_numa_nodes ? nb_numa_nodes : 1; MemoryDeviceInfoList *dimms = NULL; /* * Don't create the node if there is no device memory */ if (machine->ram_size == machine->maxram_size) { return 0; } offset = fdt_add_subnode(fdt, 0, "ibm,dynamic-reconfiguration-memory"); ret = fdt_setprop(fdt, offset, "ibm,lmb-size", prop_lmb_size, sizeof(prop_lmb_size)); if (ret < 0) { return ret; } ret = fdt_setprop_cell(fdt, offset, "ibm,memory-flags-mask", 0xff); if (ret < 0) { return ret; } ret = fdt_setprop_cell(fdt, offset, "ibm,memory-preservation-time", 0x0); if (ret < 0) { return ret; } /* ibm,dynamic-memory or ibm,dynamic-memory-v2 */ dimms = qmp_memory_device_list(); if (spapr_ovec_test(spapr->ov5_cas, OV5_DRMEM_V2)) { ret = spapr_populate_drmem_v2(spapr, fdt, offset, dimms); } else { ret = spapr_populate_drmem_v1(spapr, fdt, offset, dimms); } qapi_free_MemoryDeviceInfoList(dimms); if (ret < 0) { return ret; } /* ibm,associativity-lookup-arrays */ buf_len = (nr_nodes * 4 + 2) * sizeof(uint32_t); cur_index = int_buf = g_malloc0(buf_len); int_buf[0] = cpu_to_be32(nr_nodes); int_buf[1] = cpu_to_be32(4); /* Number of entries per associativity list */ cur_index += 2; for (i = 0; i < nr_nodes; i++) { uint32_t associativity[] = { cpu_to_be32(0x0), cpu_to_be32(0x0), cpu_to_be32(0x0), cpu_to_be32(i) }; memcpy(cur_index, associativity, sizeof(associativity)); cur_index += 4; } ret = fdt_setprop(fdt, offset, "ibm,associativity-lookup-arrays", int_buf, (cur_index - int_buf) * sizeof(uint32_t)); g_free(int_buf); return ret; } static int spapr_dt_cas_updates(sPAPRMachineState *spapr, void *fdt, sPAPROptionVector *ov5_updates) { sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); int ret = 0, offset; /* Generate ibm,dynamic-reconfiguration-memory node if required */ if (spapr_ovec_test(ov5_updates, OV5_DRCONF_MEMORY)) { g_assert(smc->dr_lmb_enabled); ret = spapr_populate_drconf_memory(spapr, fdt); if (ret) { goto out; } } offset = fdt_path_offset(fdt, "/chosen"); if (offset < 0) { offset = fdt_add_subnode(fdt, 0, "chosen"); if (offset < 0) { return offset; } } ret = spapr_ovec_populate_dt(fdt, offset, spapr->ov5_cas, "ibm,architecture-vec-5"); out: return ret; } static bool spapr_hotplugged_dev_before_cas(void) { Object *drc_container, *obj; ObjectProperty *prop; ObjectPropertyIterator iter; drc_container = container_get(object_get_root(), "/dr-connector"); object_property_iter_init(&iter, drc_container); while ((prop = object_property_iter_next(&iter))) { if (!strstart(prop->type, "link<", NULL)) { continue; } obj = object_property_get_link(drc_container, prop->name, NULL); if (spapr_drc_needed(obj)) { return true; } } return false; } int spapr_h_cas_compose_response(sPAPRMachineState *spapr, target_ulong addr, target_ulong size, sPAPROptionVector *ov5_updates) { void *fdt, *fdt_skel; sPAPRDeviceTreeUpdateHeader hdr = { .version_id = 1 }; if (spapr_hotplugged_dev_before_cas()) { return 1; } if (size < sizeof(hdr) || size > FW_MAX_SIZE) { error_report("SLOF provided an unexpected CAS buffer size " TARGET_FMT_lu " (min: %zu, max: %u)", size, sizeof(hdr), FW_MAX_SIZE); exit(EXIT_FAILURE); } size -= sizeof(hdr); /* Create skeleton */ fdt_skel = g_malloc0(size); _FDT((fdt_create(fdt_skel, size))); _FDT((fdt_finish_reservemap(fdt_skel))); _FDT((fdt_begin_node(fdt_skel, ""))); _FDT((fdt_end_node(fdt_skel))); _FDT((fdt_finish(fdt_skel))); fdt = g_malloc0(size); _FDT((fdt_open_into(fdt_skel, fdt, size))); g_free(fdt_skel); /* Fixup cpu nodes */ _FDT((spapr_fixup_cpu_dt(fdt, spapr))); if (spapr_dt_cas_updates(spapr, fdt, ov5_updates)) { return -1; } /* Pack resulting tree */ _FDT((fdt_pack(fdt))); if (fdt_totalsize(fdt) + sizeof(hdr) > size) { trace_spapr_cas_failed(size); return -1; } cpu_physical_memory_write(addr, &hdr, sizeof(hdr)); cpu_physical_memory_write(addr + sizeof(hdr), fdt, fdt_totalsize(fdt)); trace_spapr_cas_continue(fdt_totalsize(fdt) + sizeof(hdr)); g_free(fdt); return 0; } static void spapr_dt_rtas(sPAPRMachineState *spapr, void *fdt) { int rtas; GString *hypertas = g_string_sized_new(256); GString *qemu_hypertas = g_string_sized_new(256); uint32_t refpoints[] = { cpu_to_be32(0x4), cpu_to_be32(0x4) }; uint64_t max_device_addr = MACHINE(spapr)->device_memory->base + memory_region_size(&MACHINE(spapr)->device_memory->mr); uint32_t lrdr_capacity[] = { cpu_to_be32(max_device_addr >> 32), cpu_to_be32(max_device_addr & 0xffffffff), 0, cpu_to_be32(SPAPR_MEMORY_BLOCK_SIZE), cpu_to_be32(max_cpus / smp_threads), }; uint32_t maxdomains[] = { cpu_to_be32(4), cpu_to_be32(0), cpu_to_be32(0), cpu_to_be32(0), cpu_to_be32(nb_numa_nodes ? nb_numa_nodes : 1), }; _FDT(rtas = fdt_add_subnode(fdt, 0, "rtas")); /* hypertas */ add_str(hypertas, "hcall-pft"); add_str(hypertas, "hcall-term"); add_str(hypertas, "hcall-dabr"); add_str(hypertas, "hcall-interrupt"); add_str(hypertas, "hcall-tce"); add_str(hypertas, "hcall-vio"); add_str(hypertas, "hcall-splpar"); add_str(hypertas, "hcall-bulk"); add_str(hypertas, "hcall-set-mode"); add_str(hypertas, "hcall-sprg0"); add_str(hypertas, "hcall-copy"); add_str(hypertas, "hcall-debug"); add_str(qemu_hypertas, "hcall-memop1"); if (!kvm_enabled() || kvmppc_spapr_use_multitce()) { add_str(hypertas, "hcall-multi-tce"); } if (spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) { add_str(hypertas, "hcall-hpt-resize"); } _FDT(fdt_setprop(fdt, rtas, "ibm,hypertas-functions", hypertas->str, hypertas->len)); g_string_free(hypertas, TRUE); _FDT(fdt_setprop(fdt, rtas, "qemu,hypertas-functions", qemu_hypertas->str, qemu_hypertas->len)); g_string_free(qemu_hypertas, TRUE); _FDT(fdt_setprop(fdt, rtas, "ibm,associativity-reference-points", refpoints, sizeof(refpoints))); _FDT(fdt_setprop(fdt, rtas, "ibm,max-associativity-domains", maxdomains, sizeof(maxdomains))); _FDT(fdt_setprop_cell(fdt, rtas, "rtas-error-log-max", RTAS_ERROR_LOG_MAX)); _FDT(fdt_setprop_cell(fdt, rtas, "rtas-event-scan-rate", RTAS_EVENT_SCAN_RATE)); g_assert(msi_nonbroken); _FDT(fdt_setprop(fdt, rtas, "ibm,change-msix-capable", NULL, 0)); /* * According to PAPR, rtas ibm,os-term does not guarantee a return * back to the guest cpu. * * While an additional ibm,extended-os-term property indicates * that rtas call return will always occur. Set this property. */ _FDT(fdt_setprop(fdt, rtas, "ibm,extended-os-term", NULL, 0)); _FDT(fdt_setprop(fdt, rtas, "ibm,lrdr-capacity", lrdr_capacity, sizeof(lrdr_capacity))); spapr_dt_rtas_tokens(fdt, rtas); } /* * Prepare ibm,arch-vec-5-platform-support, which indicates the MMU * and the XIVE features that the guest may request and thus the valid * values for bytes 23..26 of option vector 5: */ static void spapr_dt_ov5_platform_support(sPAPRMachineState *spapr, void *fdt, int chosen) { PowerPCCPU *first_ppc_cpu = POWERPC_CPU(first_cpu); char val[2 * 4] = { 23, spapr->irq->ov5, /* Xive mode. */ 24, 0x00, /* Hash/Radix, filled in below. */ 25, 0x00, /* Hash options: Segment Tables == no, GTSE == no. */ 26, 0x40, /* Radix options: GTSE == yes. */ }; if (!ppc_check_compat(first_ppc_cpu, CPU_POWERPC_LOGICAL_3_00, 0, first_ppc_cpu->compat_pvr)) { /* * If we're in a pre POWER9 compat mode then the guest should * do hash and use the legacy interrupt mode */ val[1] = 0x00; /* XICS */ val[3] = 0x00; /* Hash */ } else if (kvm_enabled()) { if (kvmppc_has_cap_mmu_radix() && kvmppc_has_cap_mmu_hash_v3()) { val[3] = 0x80; /* OV5_MMU_BOTH */ } else if (kvmppc_has_cap_mmu_radix()) { val[3] = 0x40; /* OV5_MMU_RADIX_300 */ } else { val[3] = 0x00; /* Hash */ } } else { /* V3 MMU supports both hash and radix in tcg (with dynamic switching) */ val[3] = 0xC0; } _FDT(fdt_setprop(fdt, chosen, "ibm,arch-vec-5-platform-support", val, sizeof(val))); } static void spapr_dt_chosen(sPAPRMachineState *spapr, void *fdt) { MachineState *machine = MACHINE(spapr); int chosen; const char *boot_device = machine->boot_order; char *stdout_path = spapr_vio_stdout_path(spapr->vio_bus); size_t cb = 0; char *bootlist = get_boot_devices_list(&cb); _FDT(chosen = fdt_add_subnode(fdt, 0, "chosen")); _FDT(fdt_setprop_string(fdt, chosen, "bootargs", machine->kernel_cmdline)); _FDT(fdt_setprop_cell(fdt, chosen, "linux,initrd-start", spapr->initrd_base)); _FDT(fdt_setprop_cell(fdt, chosen, "linux,initrd-end", spapr->initrd_base + spapr->initrd_size)); if (spapr->kernel_size) { uint64_t kprop[2] = { cpu_to_be64(KERNEL_LOAD_ADDR), cpu_to_be64(spapr->kernel_size) }; _FDT(fdt_setprop(fdt, chosen, "qemu,boot-kernel", &kprop, sizeof(kprop))); if (spapr->kernel_le) { _FDT(fdt_setprop(fdt, chosen, "qemu,boot-kernel-le", NULL, 0)); } } if (boot_menu) { _FDT((fdt_setprop_cell(fdt, chosen, "qemu,boot-menu", boot_menu))); } _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-width", graphic_width)); _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-height", graphic_height)); _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-depth", graphic_depth)); if (cb && bootlist) { int i; for (i = 0; i < cb; i++) { if (bootlist[i] == '\n') { bootlist[i] = ' '; } } _FDT(fdt_setprop_string(fdt, chosen, "qemu,boot-list", bootlist)); } if (boot_device && strlen(boot_device)) { _FDT(fdt_setprop_string(fdt, chosen, "qemu,boot-device", boot_device)); } if (!spapr->has_graphics && stdout_path) { /* * "linux,stdout-path" and "stdout" properties are deprecated by linux * kernel. New platforms should only use the "stdout-path" property. Set * the new property and continue using older property to remain * compatible with the existing firmware. */ _FDT(fdt_setprop_string(fdt, chosen, "linux,stdout-path", stdout_path)); _FDT(fdt_setprop_string(fdt, chosen, "stdout-path", stdout_path)); } spapr_dt_ov5_platform_support(spapr, fdt, chosen); g_free(stdout_path); g_free(bootlist); } static void spapr_dt_hypervisor(sPAPRMachineState *spapr, void *fdt) { /* The /hypervisor node isn't in PAPR - this is a hack to allow PR * KVM to work under pHyp with some guest co-operation */ int hypervisor; uint8_t hypercall[16]; _FDT(hypervisor = fdt_add_subnode(fdt, 0, "hypervisor")); /* indicate KVM hypercall interface */ _FDT(fdt_setprop_string(fdt, hypervisor, "compatible", "linux,kvm")); if (kvmppc_has_cap_fixup_hcalls()) { /* * Older KVM versions with older guest kernels were broken * with the magic page, don't allow the guest to map it. */ if (!kvmppc_get_hypercall(first_cpu->env_ptr, hypercall, sizeof(hypercall))) { _FDT(fdt_setprop(fdt, hypervisor, "hcall-instructions", hypercall, sizeof(hypercall))); } } } static void *spapr_build_fdt(sPAPRMachineState *spapr, hwaddr rtas_addr, hwaddr rtas_size) { MachineState *machine = MACHINE(spapr); MachineClass *mc = MACHINE_GET_CLASS(machine); sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); int ret; void *fdt; sPAPRPHBState *phb; char *buf; fdt = g_malloc0(FDT_MAX_SIZE); _FDT((fdt_create_empty_tree(fdt, FDT_MAX_SIZE))); /* Root node */ _FDT(fdt_setprop_string(fdt, 0, "device_type", "chrp")); _FDT(fdt_setprop_string(fdt, 0, "model", "IBM pSeries (emulated by qemu)")); _FDT(fdt_setprop_string(fdt, 0, "compatible", "qemu,pseries")); /* * Add info to guest to indentify which host is it being run on * and what is the uuid of the guest */ if (kvmppc_get_host_model(&buf)) { _FDT(fdt_setprop_string(fdt, 0, "host-model", buf)); g_free(buf); } if (kvmppc_get_host_serial(&buf)) { _FDT(fdt_setprop_string(fdt, 0, "host-serial", buf)); g_free(buf); } buf = qemu_uuid_unparse_strdup(&qemu_uuid); _FDT(fdt_setprop_string(fdt, 0, "vm,uuid", buf)); if (qemu_uuid_set) { _FDT(fdt_setprop_string(fdt, 0, "system-id", buf)); } g_free(buf); if (qemu_get_vm_name()) { _FDT(fdt_setprop_string(fdt, 0, "ibm,partition-name", qemu_get_vm_name())); } _FDT(fdt_setprop_cell(fdt, 0, "#address-cells", 2)); _FDT(fdt_setprop_cell(fdt, 0, "#size-cells", 2)); /* /interrupt controller */ spapr->irq->dt_populate(spapr, spapr_max_server_number(spapr), fdt, PHANDLE_XICP); ret = spapr_populate_memory(spapr, fdt); if (ret < 0) { error_report("couldn't setup memory nodes in fdt"); exit(1); } /* /vdevice */ spapr_dt_vdevice(spapr->vio_bus, fdt); if (object_resolve_path_type("", TYPE_SPAPR_RNG, NULL)) { ret = spapr_rng_populate_dt(fdt); if (ret < 0) { error_report("could not set up rng device in the fdt"); exit(1); } } QLIST_FOREACH(phb, &spapr->phbs, list) { ret = spapr_populate_pci_dt(phb, PHANDLE_XICP, fdt, spapr->irq->nr_msis); if (ret < 0) { error_report("couldn't setup PCI devices in fdt"); exit(1); } } /* cpus */ spapr_populate_cpus_dt_node(fdt, spapr); if (smc->dr_lmb_enabled) { _FDT(spapr_drc_populate_dt(fdt, 0, NULL, SPAPR_DR_CONNECTOR_TYPE_LMB)); } if (mc->has_hotpluggable_cpus) { int offset = fdt_path_offset(fdt, "/cpus"); ret = spapr_drc_populate_dt(fdt, offset, NULL, SPAPR_DR_CONNECTOR_TYPE_CPU); if (ret < 0) { error_report("Couldn't set up CPU DR device tree properties"); exit(1); } } /* /event-sources */ spapr_dt_events(spapr, fdt); /* /rtas */ spapr_dt_rtas(spapr, fdt); /* /chosen */ spapr_dt_chosen(spapr, fdt); /* /hypervisor */ if (kvm_enabled()) { spapr_dt_hypervisor(spapr, fdt); } /* Build memory reserve map */ if (spapr->kernel_size) { _FDT((fdt_add_mem_rsv(fdt, KERNEL_LOAD_ADDR, spapr->kernel_size))); } if (spapr->initrd_size) { _FDT((fdt_add_mem_rsv(fdt, spapr->initrd_base, spapr->initrd_size))); } /* ibm,client-architecture-support updates */ ret = spapr_dt_cas_updates(spapr, fdt, spapr->ov5_cas); if (ret < 0) { error_report("couldn't setup CAS properties fdt"); exit(1); } return fdt; } static uint64_t translate_kernel_address(void *opaque, uint64_t addr) { return (addr & 0x0fffffff) + KERNEL_LOAD_ADDR; } static void emulate_spapr_hypercall(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu) { CPUPPCState *env = &cpu->env; /* The TCG path should also be holding the BQL at this point */ g_assert(qemu_mutex_iothread_locked()); if (msr_pr) { hcall_dprintf("Hypercall made with MSR[PR]=1\n"); env->gpr[3] = H_PRIVILEGE; } else { env->gpr[3] = spapr_hypercall(cpu, env->gpr[3], &env->gpr[4]); } } static uint64_t spapr_get_patbe(PPCVirtualHypervisor *vhyp) { sPAPRMachineState *spapr = SPAPR_MACHINE(vhyp); return spapr->patb_entry; } #define HPTE(_table, _i) (void *)(((uint64_t *)(_table)) + ((_i) * 2)) #define HPTE_VALID(_hpte) (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_VALID) #define HPTE_DIRTY(_hpte) (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_HPTE_DIRTY) #define CLEAN_HPTE(_hpte) ((*(uint64_t *)(_hpte)) &= tswap64(~HPTE64_V_HPTE_DIRTY)) #define DIRTY_HPTE(_hpte) ((*(uint64_t *)(_hpte)) |= tswap64(HPTE64_V_HPTE_DIRTY)) /* * Get the fd to access the kernel htab, re-opening it if necessary */ static int get_htab_fd(sPAPRMachineState *spapr) { Error *local_err = NULL; if (spapr->htab_fd >= 0) { return spapr->htab_fd; } spapr->htab_fd = kvmppc_get_htab_fd(false, 0, &local_err); if (spapr->htab_fd < 0) { error_report_err(local_err); } return spapr->htab_fd; } void close_htab_fd(sPAPRMachineState *spapr) { if (spapr->htab_fd >= 0) { close(spapr->htab_fd); } spapr->htab_fd = -1; } static hwaddr spapr_hpt_mask(PPCVirtualHypervisor *vhyp) { sPAPRMachineState *spapr = SPAPR_MACHINE(vhyp); return HTAB_SIZE(spapr) / HASH_PTEG_SIZE_64 - 1; } static target_ulong spapr_encode_hpt_for_kvm_pr(PPCVirtualHypervisor *vhyp) { sPAPRMachineState *spapr = SPAPR_MACHINE(vhyp); assert(kvm_enabled()); if (!spapr->htab) { return 0; } return (target_ulong)(uintptr_t)spapr->htab | (spapr->htab_shift - 18); } static const ppc_hash_pte64_t *spapr_map_hptes(PPCVirtualHypervisor *vhyp, hwaddr ptex, int n) { sPAPRMachineState *spapr = SPAPR_MACHINE(vhyp); hwaddr pte_offset = ptex * HASH_PTE_SIZE_64; if (!spapr->htab) { /* * HTAB is controlled by KVM. Fetch into temporary buffer */ ppc_hash_pte64_t *hptes = g_malloc(n * HASH_PTE_SIZE_64); kvmppc_read_hptes(hptes, ptex, n); return hptes; } /* * HTAB is controlled by QEMU. Just point to the internally * accessible PTEG. */ return (const ppc_hash_pte64_t *)(spapr->htab + pte_offset); } static void spapr_unmap_hptes(PPCVirtualHypervisor *vhyp, const ppc_hash_pte64_t *hptes, hwaddr ptex, int n) { sPAPRMachineState *spapr = SPAPR_MACHINE(vhyp); if (!spapr->htab) { g_free((void *)hptes); } /* Nothing to do for qemu managed HPT */ } static void spapr_store_hpte(PPCVirtualHypervisor *vhyp, hwaddr ptex, uint64_t pte0, uint64_t pte1) { sPAPRMachineState *spapr = SPAPR_MACHINE(vhyp); hwaddr offset = ptex * HASH_PTE_SIZE_64; if (!spapr->htab) { kvmppc_write_hpte(ptex, pte0, pte1); } else { stq_p(spapr->htab + offset, pte0); stq_p(spapr->htab + offset + HASH_PTE_SIZE_64 / 2, pte1); } } int spapr_hpt_shift_for_ramsize(uint64_t ramsize) { int shift; /* We aim for a hash table of size 1/128 the size of RAM (rounded * up). The PAPR recommendation is actually 1/64 of RAM size, but * that's much more than is needed for Linux guests */ shift = ctz64(pow2ceil(ramsize)) - 7; shift = MAX(shift, 18); /* Minimum architected size */ shift = MIN(shift, 46); /* Maximum architected size */ return shift; } void spapr_free_hpt(sPAPRMachineState *spapr) { g_free(spapr->htab); spapr->htab = NULL; spapr->htab_shift = 0; close_htab_fd(spapr); } void spapr_reallocate_hpt(sPAPRMachineState *spapr, int shift, Error **errp) { long rc; /* Clean up any HPT info from a previous boot */ spapr_free_hpt(spapr); rc = kvmppc_reset_htab(shift); if (rc < 0) { /* kernel-side HPT needed, but couldn't allocate one */ error_setg_errno(errp, errno, "Failed to allocate KVM HPT of order %d (try smaller maxmem?)", shift); /* This is almost certainly fatal, but if the caller really * wants to carry on with shift == 0, it's welcome to try */ } else if (rc > 0) { /* kernel-side HPT allocated */ if (rc != shift) { error_setg(errp, "Requested order %d HPT, but kernel allocated order %ld (try smaller maxmem?)", shift, rc); } spapr->htab_shift = shift; spapr->htab = NULL; } else { /* kernel-side HPT not needed, allocate in userspace instead */ size_t size = 1ULL << shift; int i; spapr->htab = qemu_memalign(size, size); if (!spapr->htab) { error_setg_errno(errp, errno, "Could not allocate HPT of order %d", shift); return; } memset(spapr->htab, 0, size); spapr->htab_shift = shift; for (i = 0; i < size / HASH_PTE_SIZE_64; i++) { DIRTY_HPTE(HPTE(spapr->htab, i)); } } /* We're setting up a hash table, so that means we're not radix */ spapr->patb_entry = 0; } void spapr_setup_hpt_and_vrma(sPAPRMachineState *spapr) { int hpt_shift; if ((spapr->resize_hpt == SPAPR_RESIZE_HPT_DISABLED) || (spapr->cas_reboot && !spapr_ovec_test(spapr->ov5_cas, OV5_HPT_RESIZE))) { hpt_shift = spapr_hpt_shift_for_ramsize(MACHINE(spapr)->maxram_size); } else { uint64_t current_ram_size; current_ram_size = MACHINE(spapr)->ram_size + get_plugged_memory_size(); hpt_shift = spapr_hpt_shift_for_ramsize(current_ram_size); } spapr_reallocate_hpt(spapr, hpt_shift, &error_fatal); if (spapr->vrma_adjust) { spapr->rma_size = kvmppc_rma_size(spapr_node0_size(MACHINE(spapr)), spapr->htab_shift); } } static int spapr_reset_drcs(Object *child, void *opaque) { sPAPRDRConnector *drc = (sPAPRDRConnector *) object_dynamic_cast(child, TYPE_SPAPR_DR_CONNECTOR); if (drc) { spapr_drc_reset(drc); } return 0; } static void spapr_machine_reset(void) { MachineState *machine = MACHINE(qdev_get_machine()); sPAPRMachineState *spapr = SPAPR_MACHINE(machine); PowerPCCPU *first_ppc_cpu; uint32_t rtas_limit; hwaddr rtas_addr, fdt_addr; void *fdt; int rc; spapr_caps_apply(spapr); first_ppc_cpu = POWERPC_CPU(first_cpu); if (kvm_enabled() && kvmppc_has_cap_mmu_radix() && ppc_type_check_compat(machine->cpu_type, CPU_POWERPC_LOGICAL_3_00, 0, spapr->max_compat_pvr)) { /* If using KVM with radix mode available, VCPUs can be started * without a HPT because KVM will start them in radix mode. * Set the GR bit in PATB so that we know there is no HPT. */ spapr->patb_entry = PATBE1_GR; } else { spapr_setup_hpt_and_vrma(spapr); } /* if this reset wasn't generated by CAS, we should reset our * negotiated options and start from scratch */ if (!spapr->cas_reboot) { spapr_ovec_cleanup(spapr->ov5_cas); spapr->ov5_cas = spapr_ovec_new(); ppc_set_compat(first_ppc_cpu, spapr->max_compat_pvr, &error_fatal); } if (!SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { spapr_irq_msi_reset(spapr); } qemu_devices_reset(); /* * This is fixing some of the default configuration of the XIVE * devices. To be called after the reset of the machine devices. */ spapr_irq_reset(spapr, &error_fatal); /* DRC reset may cause a device to be unplugged. This will cause troubles * if this device is used by another device (eg, a running vhost backend * will crash QEMU if the DIMM holding the vring goes away). To avoid such * situations, we reset DRCs after all devices have been reset. */ object_child_foreach_recursive(object_get_root(), spapr_reset_drcs, NULL); spapr_clear_pending_events(spapr); /* * We place the device tree and RTAS just below either the top of the RMA, * or just below 2GB, whichever is lowere, so that it can be * processed with 32-bit real mode code if necessary */ rtas_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR); rtas_addr = rtas_limit - RTAS_MAX_SIZE; fdt_addr = rtas_addr - FDT_MAX_SIZE; fdt = spapr_build_fdt(spapr, rtas_addr, spapr->rtas_size); spapr_load_rtas(spapr, fdt, rtas_addr); rc = fdt_pack(fdt); /* Should only fail if we've built a corrupted tree */ assert(rc == 0); if (fdt_totalsize(fdt) > FDT_MAX_SIZE) { error_report("FDT too big ! 0x%x bytes (max is 0x%x)", fdt_totalsize(fdt), FDT_MAX_SIZE); exit(1); } /* Load the fdt */ qemu_fdt_dumpdtb(fdt, fdt_totalsize(fdt)); cpu_physical_memory_write(fdt_addr, fdt, fdt_totalsize(fdt)); g_free(fdt); /* Set up the entry state */ spapr_cpu_set_entry_state(first_ppc_cpu, SPAPR_ENTRY_POINT, fdt_addr); first_ppc_cpu->env.gpr[5] = 0; spapr->cas_reboot = false; } static void spapr_create_nvram(sPAPRMachineState *spapr) { DeviceState *dev = qdev_create(&spapr->vio_bus->bus, "spapr-nvram"); DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0); if (dinfo) { qdev_prop_set_drive(dev, "drive", blk_by_legacy_dinfo(dinfo), &error_fatal); } qdev_init_nofail(dev); spapr->nvram = (struct sPAPRNVRAM *)dev; } static void spapr_rtc_create(sPAPRMachineState *spapr) { object_initialize(&spapr->rtc, sizeof(spapr->rtc), TYPE_SPAPR_RTC); object_property_add_child(OBJECT(spapr), "rtc", OBJECT(&spapr->rtc), &error_fatal); object_property_set_bool(OBJECT(&spapr->rtc), true, "realized", &error_fatal); object_property_add_alias(OBJECT(spapr), "rtc-time", OBJECT(&spapr->rtc), "date", &error_fatal); } /* Returns whether we want to use VGA or not */ static bool spapr_vga_init(PCIBus *pci_bus, Error **errp) { switch (vga_interface_type) { case VGA_NONE: return false; case VGA_DEVICE: return true; case VGA_STD: case VGA_VIRTIO: return pci_vga_init(pci_bus) != NULL; default: error_setg(errp, "Unsupported VGA mode, only -vga std or -vga virtio is supported"); return false; } } static int spapr_pre_load(void *opaque) { int rc; rc = spapr_caps_pre_load(opaque); if (rc) { return rc; } return 0; } static int spapr_post_load(void *opaque, int version_id) { sPAPRMachineState *spapr = (sPAPRMachineState *)opaque; int err = 0; err = spapr_caps_post_migration(spapr); if (err) { return err; } /* In earlier versions, there was no separate qdev for the PAPR * RTC, so the RTC offset was stored directly in sPAPREnvironment. * So when migrating from those versions, poke the incoming offset * value into the RTC device */ if (version_id < 3) { err = spapr_rtc_import_offset(&spapr->rtc, spapr->rtc_offset); } if (kvm_enabled() && spapr->patb_entry) { PowerPCCPU *cpu = POWERPC_CPU(first_cpu); bool radix = !!(spapr->patb_entry & PATBE1_GR); bool gtse = !!(cpu->env.spr[SPR_LPCR] & LPCR_GTSE); err = kvmppc_configure_v3_mmu(cpu, radix, gtse, spapr->patb_entry); if (err) { error_report("Process table config unsupported by the host"); return -EINVAL; } } err = spapr_irq_post_load(spapr, version_id); if (err) { return err; } return err; } static int spapr_pre_save(void *opaque) { int rc; rc = spapr_caps_pre_save(opaque); if (rc) { return rc; } return 0; } static bool version_before_3(void *opaque, int version_id) { return version_id < 3; } static bool spapr_pending_events_needed(void *opaque) { sPAPRMachineState *spapr = (sPAPRMachineState *)opaque; return !QTAILQ_EMPTY(&spapr->pending_events); } static const VMStateDescription vmstate_spapr_event_entry = { .name = "spapr_event_log_entry", .version_id = 1, .minimum_version_id = 1, .fields = (VMStateField[]) { VMSTATE_UINT32(summary, sPAPREventLogEntry), VMSTATE_UINT32(extended_length, sPAPREventLogEntry), VMSTATE_VBUFFER_ALLOC_UINT32(extended_log, sPAPREventLogEntry, 0, NULL, extended_length), VMSTATE_END_OF_LIST() }, }; static const VMStateDescription vmstate_spapr_pending_events = { .name = "spapr_pending_events", .version_id = 1, .minimum_version_id = 1, .needed = spapr_pending_events_needed, .fields = (VMStateField[]) { VMSTATE_QTAILQ_V(pending_events, sPAPRMachineState, 1, vmstate_spapr_event_entry, sPAPREventLogEntry, next), VMSTATE_END_OF_LIST() }, }; static bool spapr_ov5_cas_needed(void *opaque) { sPAPRMachineState *spapr = opaque; sPAPROptionVector *ov5_mask = spapr_ovec_new(); sPAPROptionVector *ov5_legacy = spapr_ovec_new(); sPAPROptionVector *ov5_removed = spapr_ovec_new(); bool cas_needed; /* Prior to the introduction of sPAPROptionVector, we had two option * vectors we dealt with: OV5_FORM1_AFFINITY, and OV5_DRCONF_MEMORY. * Both of these options encode machine topology into the device-tree * in such a way that the now-booted OS should still be able to interact * appropriately with QEMU regardless of what options were actually * negotiatied on the source side. * * As such, we can avoid migrating the CAS-negotiated options if these * are the only options available on the current machine/platform. * Since these are the only options available for pseries-2.7 and * earlier, this allows us to maintain old->new/new->old migration * compatibility. * * For QEMU 2.8+, there are additional CAS-negotiatable options available * via default pseries-2.8 machines and explicit command-line parameters. * Some of these options, like OV5_HP_EVT, *do* require QEMU to be aware * of the actual CAS-negotiated values to continue working properly. For * example, availability of memory unplug depends on knowing whether * OV5_HP_EVT was negotiated via CAS. * * Thus, for any cases where the set of available CAS-negotiatable * options extends beyond OV5_FORM1_AFFINITY and OV5_DRCONF_MEMORY, we * include the CAS-negotiated options in the migration stream, unless * if they affect boot time behaviour only. */ spapr_ovec_set(ov5_mask, OV5_FORM1_AFFINITY); spapr_ovec_set(ov5_mask, OV5_DRCONF_MEMORY); spapr_ovec_set(ov5_mask, OV5_DRMEM_V2); /* spapr_ovec_diff returns true if bits were removed. we avoid using * the mask itself since in the future it's possible "legacy" bits may be * removed via machine options, which could generate a false positive * that breaks migration. */ spapr_ovec_intersect(ov5_legacy, spapr->ov5, ov5_mask); cas_needed = spapr_ovec_diff(ov5_removed, spapr->ov5, ov5_legacy); spapr_ovec_cleanup(ov5_mask); spapr_ovec_cleanup(ov5_legacy); spapr_ovec_cleanup(ov5_removed); return cas_needed; } static const VMStateDescription vmstate_spapr_ov5_cas = { .name = "spapr_option_vector_ov5_cas", .version_id = 1, .minimum_version_id = 1, .needed = spapr_ov5_cas_needed, .fields = (VMStateField[]) { VMSTATE_STRUCT_POINTER_V(ov5_cas, sPAPRMachineState, 1, vmstate_spapr_ovec, sPAPROptionVector), VMSTATE_END_OF_LIST() }, }; static bool spapr_patb_entry_needed(void *opaque) { sPAPRMachineState *spapr = opaque; return !!spapr->patb_entry; } static const VMStateDescription vmstate_spapr_patb_entry = { .name = "spapr_patb_entry", .version_id = 1, .minimum_version_id = 1, .needed = spapr_patb_entry_needed, .fields = (VMStateField[]) { VMSTATE_UINT64(patb_entry, sPAPRMachineState), VMSTATE_END_OF_LIST() }, }; static bool spapr_irq_map_needed(void *opaque) { sPAPRMachineState *spapr = opaque; return spapr->irq_map && !bitmap_empty(spapr->irq_map, spapr->irq_map_nr); } static const VMStateDescription vmstate_spapr_irq_map = { .name = "spapr_irq_map", .version_id = 1, .minimum_version_id = 1, .needed = spapr_irq_map_needed, .fields = (VMStateField[]) { VMSTATE_BITMAP(irq_map, sPAPRMachineState, 0, irq_map_nr), VMSTATE_END_OF_LIST() }, }; static const VMStateDescription vmstate_spapr = { .name = "spapr", .version_id = 3, .minimum_version_id = 1, .pre_load = spapr_pre_load, .post_load = spapr_post_load, .pre_save = spapr_pre_save, .fields = (VMStateField[]) { /* used to be @next_irq */ VMSTATE_UNUSED_BUFFER(version_before_3, 0, 4), /* RTC offset */ VMSTATE_UINT64_TEST(rtc_offset, sPAPRMachineState, version_before_3), VMSTATE_PPC_TIMEBASE_V(tb, sPAPRMachineState, 2), VMSTATE_END_OF_LIST() }, .subsections = (const VMStateDescription*[]) { &vmstate_spapr_ov5_cas, &vmstate_spapr_patb_entry, &vmstate_spapr_pending_events, &vmstate_spapr_cap_htm, &vmstate_spapr_cap_vsx, &vmstate_spapr_cap_dfp, &vmstate_spapr_cap_cfpc, &vmstate_spapr_cap_sbbc, &vmstate_spapr_cap_ibs, &vmstate_spapr_irq_map, &vmstate_spapr_cap_nested_kvm_hv, NULL } }; static int htab_save_setup(QEMUFile *f, void *opaque) { sPAPRMachineState *spapr = opaque; /* "Iteration" header */ if (!spapr->htab_shift) { qemu_put_be32(f, -1); } else { qemu_put_be32(f, spapr->htab_shift); } if (spapr->htab) { spapr->htab_save_index = 0; spapr->htab_first_pass = true; } else { if (spapr->htab_shift) { assert(kvm_enabled()); } } return 0; } static void htab_save_chunk(QEMUFile *f, sPAPRMachineState *spapr, int chunkstart, int n_valid, int n_invalid) { qemu_put_be32(f, chunkstart); qemu_put_be16(f, n_valid); qemu_put_be16(f, n_invalid); qemu_put_buffer(f, HPTE(spapr->htab, chunkstart), HASH_PTE_SIZE_64 * n_valid); } static void htab_save_end_marker(QEMUFile *f) { qemu_put_be32(f, 0); qemu_put_be16(f, 0); qemu_put_be16(f, 0); } static void htab_save_first_pass(QEMUFile *f, sPAPRMachineState *spapr, int64_t max_ns) { bool has_timeout = max_ns != -1; int htabslots = HTAB_SIZE(spapr) / HASH_PTE_SIZE_64; int index = spapr->htab_save_index; int64_t starttime = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); assert(spapr->htab_first_pass); do { int chunkstart; /* Consume invalid HPTEs */ while ((index < htabslots) && !HPTE_VALID(HPTE(spapr->htab, index))) { CLEAN_HPTE(HPTE(spapr->htab, index)); index++; } /* Consume valid HPTEs */ chunkstart = index; while ((index < htabslots) && (index - chunkstart < USHRT_MAX) && HPTE_VALID(HPTE(spapr->htab, index))) { CLEAN_HPTE(HPTE(spapr->htab, index)); index++; } if (index > chunkstart) { int n_valid = index - chunkstart; htab_save_chunk(f, spapr, chunkstart, n_valid, 0); if (has_timeout && (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) > max_ns) { break; } } } while ((index < htabslots) && !qemu_file_rate_limit(f)); if (index >= htabslots) { assert(index == htabslots); index = 0; spapr->htab_first_pass = false; } spapr->htab_save_index = index; } static int htab_save_later_pass(QEMUFile *f, sPAPRMachineState *spapr, int64_t max_ns) { bool final = max_ns < 0; int htabslots = HTAB_SIZE(spapr) / HASH_PTE_SIZE_64; int examined = 0, sent = 0; int index = spapr->htab_save_index; int64_t starttime = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); assert(!spapr->htab_first_pass); do { int chunkstart, invalidstart; /* Consume non-dirty HPTEs */ while ((index < htabslots) && !HPTE_DIRTY(HPTE(spapr->htab, index))) { index++; examined++; } chunkstart = index; /* Consume valid dirty HPTEs */ while ((index < htabslots) && (index - chunkstart < USHRT_MAX) && HPTE_DIRTY(HPTE(spapr->htab, index)) && HPTE_VALID(HPTE(spapr->htab, index))) { CLEAN_HPTE(HPTE(spapr->htab, index)); index++; examined++; } invalidstart = index; /* Consume invalid dirty HPTEs */ while ((index < htabslots) && (index - invalidstart < USHRT_MAX) && HPTE_DIRTY(HPTE(spapr->htab, index)) && !HPTE_VALID(HPTE(spapr->htab, index))) { CLEAN_HPTE(HPTE(spapr->htab, index)); index++; examined++; } if (index > chunkstart) { int n_valid = invalidstart - chunkstart; int n_invalid = index - invalidstart; htab_save_chunk(f, spapr, chunkstart, n_valid, n_invalid); sent += index - chunkstart; if (!final && (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) > max_ns) { break; } } if (examined >= htabslots) { break; } if (index >= htabslots) { assert(index == htabslots); index = 0; } } while ((examined < htabslots) && (!qemu_file_rate_limit(f) || final)); if (index >= htabslots) { assert(index == htabslots); index = 0; } spapr->htab_save_index = index; return (examined >= htabslots) && (sent == 0) ? 1 : 0; } #define MAX_ITERATION_NS 5000000 /* 5 ms */ #define MAX_KVM_BUF_SIZE 2048 static int htab_save_iterate(QEMUFile *f, void *opaque) { sPAPRMachineState *spapr = opaque; int fd; int rc = 0; /* Iteration header */ if (!spapr->htab_shift) { qemu_put_be32(f, -1); return 1; } else { qemu_put_be32(f, 0); } if (!spapr->htab) { assert(kvm_enabled()); fd = get_htab_fd(spapr); if (fd < 0) { return fd; } rc = kvmppc_save_htab(f, fd, MAX_KVM_BUF_SIZE, MAX_ITERATION_NS); if (rc < 0) { return rc; } } else if (spapr->htab_first_pass) { htab_save_first_pass(f, spapr, MAX_ITERATION_NS); } else { rc = htab_save_later_pass(f, spapr, MAX_ITERATION_NS); } htab_save_end_marker(f); return rc; } static int htab_save_complete(QEMUFile *f, void *opaque) { sPAPRMachineState *spapr = opaque; int fd; /* Iteration header */ if (!spapr->htab_shift) { qemu_put_be32(f, -1); return 0; } else { qemu_put_be32(f, 0); } if (!spapr->htab) { int rc; assert(kvm_enabled()); fd = get_htab_fd(spapr); if (fd < 0) { return fd; } rc = kvmppc_save_htab(f, fd, MAX_KVM_BUF_SIZE, -1); if (rc < 0) { return rc; } } else { if (spapr->htab_first_pass) { htab_save_first_pass(f, spapr, -1); } htab_save_later_pass(f, spapr, -1); } /* End marker */ htab_save_end_marker(f); return 0; } static int htab_load(QEMUFile *f, void *opaque, int version_id) { sPAPRMachineState *spapr = opaque; uint32_t section_hdr; int fd = -1; Error *local_err = NULL; if (version_id < 1 || version_id > 1) { error_report("htab_load() bad version"); return -EINVAL; } section_hdr = qemu_get_be32(f); if (section_hdr == -1) { spapr_free_hpt(spapr); return 0; } if (section_hdr) { /* First section gives the htab size */ spapr_reallocate_hpt(spapr, section_hdr, &local_err); if (local_err) { error_report_err(local_err); return -EINVAL; } return 0; } if (!spapr->htab) { assert(kvm_enabled()); fd = kvmppc_get_htab_fd(true, 0, &local_err); if (fd < 0) { error_report_err(local_err); return fd; } } while (true) { uint32_t index; uint16_t n_valid, n_invalid; index = qemu_get_be32(f); n_valid = qemu_get_be16(f); n_invalid = qemu_get_be16(f); if ((index == 0) && (n_valid == 0) && (n_invalid == 0)) { /* End of Stream */ break; } if ((index + n_valid + n_invalid) > (HTAB_SIZE(spapr) / HASH_PTE_SIZE_64)) { /* Bad index in stream */ error_report( "htab_load() bad index %d (%hd+%hd entries) in htab stream (htab_shift=%d)", index, n_valid, n_invalid, spapr->htab_shift); return -EINVAL; } if (spapr->htab) { if (n_valid) { qemu_get_buffer(f, HPTE(spapr->htab, index), HASH_PTE_SIZE_64 * n_valid); } if (n_invalid) { memset(HPTE(spapr->htab, index + n_valid), 0, HASH_PTE_SIZE_64 * n_invalid); } } else { int rc; assert(fd >= 0); rc = kvmppc_load_htab_chunk(f, fd, index, n_valid, n_invalid); if (rc < 0) { return rc; } } } if (!spapr->htab) { assert(fd >= 0); close(fd); } return 0; } static void htab_save_cleanup(void *opaque) { sPAPRMachineState *spapr = opaque; close_htab_fd(spapr); } static SaveVMHandlers savevm_htab_handlers = { .save_setup = htab_save_setup, .save_live_iterate = htab_save_iterate, .save_live_complete_precopy = htab_save_complete, .save_cleanup = htab_save_cleanup, .load_state = htab_load, }; static void spapr_boot_set(void *opaque, const char *boot_device, Error **errp) { MachineState *machine = MACHINE(opaque); machine->boot_order = g_strdup(boot_device); } static void spapr_create_lmb_dr_connectors(sPAPRMachineState *spapr) { MachineState *machine = MACHINE(spapr); uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; uint32_t nr_lmbs = (machine->maxram_size - machine->ram_size)/lmb_size; int i; for (i = 0; i < nr_lmbs; i++) { uint64_t addr; addr = i * lmb_size + machine->device_memory->base; spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_LMB, addr / lmb_size); } } /* * If RAM size, maxmem size and individual node mem sizes aren't aligned * to SPAPR_MEMORY_BLOCK_SIZE(256MB), then refuse to start the guest * since we can't support such unaligned sizes with DRCONF_MEMORY. */ static void spapr_validate_node_memory(MachineState *machine, Error **errp) { int i; if (machine->ram_size % SPAPR_MEMORY_BLOCK_SIZE) { error_setg(errp, "Memory size 0x" RAM_ADDR_FMT " is not aligned to %" PRIu64 " MiB", machine->ram_size, SPAPR_MEMORY_BLOCK_SIZE / MiB); return; } if (machine->maxram_size % SPAPR_MEMORY_BLOCK_SIZE) { error_setg(errp, "Maximum memory size 0x" RAM_ADDR_FMT " is not aligned to %" PRIu64 " MiB", machine->ram_size, SPAPR_MEMORY_BLOCK_SIZE / MiB); return; } for (i = 0; i < nb_numa_nodes; i++) { if (numa_info[i].node_mem % SPAPR_MEMORY_BLOCK_SIZE) { error_setg(errp, "Node %d memory size 0x%" PRIx64 " is not aligned to %" PRIu64 " MiB", i, numa_info[i].node_mem, SPAPR_MEMORY_BLOCK_SIZE / MiB); return; } } } /* find cpu slot in machine->possible_cpus by core_id */ static CPUArchId *spapr_find_cpu_slot(MachineState *ms, uint32_t id, int *idx) { int index = id / smp_threads; if (index >= ms->possible_cpus->len) { return NULL; } if (idx) { *idx = index; } return &ms->possible_cpus->cpus[index]; } static void spapr_set_vsmt_mode(sPAPRMachineState *spapr, Error **errp) { Error *local_err = NULL; bool vsmt_user = !!spapr->vsmt; int kvm_smt = kvmppc_smt_threads(); int ret; if (!kvm_enabled() && (smp_threads > 1)) { error_setg(&local_err, "TCG cannot support more than 1 thread/core " "on a pseries machine"); goto out; } if (!is_power_of_2(smp_threads)) { error_setg(&local_err, "Cannot support %d threads/core on a pseries " "machine because it must be a power of 2", smp_threads); goto out; } /* Detemine the VSMT mode to use: */ if (vsmt_user) { if (spapr->vsmt < smp_threads) { error_setg(&local_err, "Cannot support VSMT mode %d" " because it must be >= threads/core (%d)", spapr->vsmt, smp_threads); goto out; } /* In this case, spapr->vsmt has been set by the command line */ } else { /* * Default VSMT value is tricky, because we need it to be as * consistent as possible (for migration), but this requires * changing it for at least some existing cases. We pick 8 as * the value that we'd get with KVM on POWER8, the * overwhelmingly common case in production systems. */ spapr->vsmt = MAX(8, smp_threads); } /* KVM: If necessary, set the SMT mode: */ if (kvm_enabled() && (spapr->vsmt != kvm_smt)) { ret = kvmppc_set_smt_threads(spapr->vsmt); if (ret) { /* Looks like KVM isn't able to change VSMT mode */ error_setg(&local_err, "Failed to set KVM's VSMT mode to %d (errno %d)", spapr->vsmt, ret); /* We can live with that if the default one is big enough * for the number of threads, and a submultiple of the one * we want. In this case we'll waste some vcpu ids, but * behaviour will be correct */ if ((kvm_smt >= smp_threads) && ((spapr->vsmt % kvm_smt) == 0)) { warn_report_err(local_err); local_err = NULL; goto out; } else { if (!vsmt_user) { error_append_hint(&local_err, "On PPC, a VM with %d threads/core" " on a host with %d threads/core" " requires the use of VSMT mode %d.\n", smp_threads, kvm_smt, spapr->vsmt); } kvmppc_hint_smt_possible(&local_err); goto out; } } } /* else TCG: nothing to do currently */ out: error_propagate(errp, local_err); } static void spapr_init_cpus(sPAPRMachineState *spapr) { MachineState *machine = MACHINE(spapr); MachineClass *mc = MACHINE_GET_CLASS(machine); sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); const char *type = spapr_get_cpu_core_type(machine->cpu_type); const CPUArchIdList *possible_cpus; int boot_cores_nr = smp_cpus / smp_threads; int i; possible_cpus = mc->possible_cpu_arch_ids(machine); if (mc->has_hotpluggable_cpus) { if (smp_cpus % smp_threads) { error_report("smp_cpus (%u) must be multiple of threads (%u)", smp_cpus, smp_threads); exit(1); } if (max_cpus % smp_threads) { error_report("max_cpus (%u) must be multiple of threads (%u)", max_cpus, smp_threads); exit(1); } } else { if (max_cpus != smp_cpus) { error_report("This machine version does not support CPU hotplug"); exit(1); } boot_cores_nr = possible_cpus->len; } if (smc->pre_2_10_has_unused_icps) { int i; for (i = 0; i < spapr_max_server_number(spapr); i++) { /* Dummy entries get deregistered when real ICPState objects * are registered during CPU core hotplug. */ pre_2_10_vmstate_register_dummy_icp(i); } } for (i = 0; i < possible_cpus->len; i++) { int core_id = i * smp_threads; if (mc->has_hotpluggable_cpus) { spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_CPU, spapr_vcpu_id(spapr, core_id)); } if (i < boot_cores_nr) { Object *core = object_new(type); int nr_threads = smp_threads; /* Handle the partially filled core for older machine types */ if ((i + 1) * smp_threads >= smp_cpus) { nr_threads = smp_cpus - i * smp_threads; } object_property_set_int(core, nr_threads, "nr-threads", &error_fatal); object_property_set_int(core, core_id, CPU_CORE_PROP_CORE_ID, &error_fatal); object_property_set_bool(core, true, "realized", &error_fatal); object_unref(core); } } } /* pSeries LPAR / sPAPR hardware init */ static void spapr_machine_init(MachineState *machine) { sPAPRMachineState *spapr = SPAPR_MACHINE(machine); sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); const char *kernel_filename = machine->kernel_filename; const char *initrd_filename = machine->initrd_filename; PCIHostState *phb; int i; MemoryRegion *sysmem = get_system_memory(); MemoryRegion *ram = g_new(MemoryRegion, 1); hwaddr node0_size = spapr_node0_size(machine); long load_limit, fw_size; char *filename; Error *resize_hpt_err = NULL; msi_nonbroken = true; QLIST_INIT(&spapr->phbs); QTAILQ_INIT(&spapr->pending_dimm_unplugs); /* Determine capabilities to run with */ spapr_caps_init(spapr); kvmppc_check_papr_resize_hpt(&resize_hpt_err); if (spapr->resize_hpt == SPAPR_RESIZE_HPT_DEFAULT) { /* * If the user explicitly requested a mode we should either * supply it, or fail completely (which we do below). But if * it's not set explicitly, we reset our mode to something * that works */ if (resize_hpt_err) { spapr->resize_hpt = SPAPR_RESIZE_HPT_DISABLED; error_free(resize_hpt_err); resize_hpt_err = NULL; } else { spapr->resize_hpt = smc->resize_hpt_default; } } assert(spapr->resize_hpt != SPAPR_RESIZE_HPT_DEFAULT); if ((spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) && resize_hpt_err) { /* * User requested HPT resize, but this host can't supply it. Bail out */ error_report_err(resize_hpt_err); exit(1); } spapr->rma_size = node0_size; /* With KVM, we don't actually know whether KVM supports an * unbounded RMA (PR KVM) or is limited by the hash table size * (HV KVM using VRMA), so we always assume the latter * * In that case, we also limit the initial allocations for RTAS * etc... to 256M since we have no way to know what the VRMA size * is going to be as it depends on the size of the hash table * which isn't determined yet. */ if (kvm_enabled()) { spapr->vrma_adjust = 1; spapr->rma_size = MIN(spapr->rma_size, 0x10000000); } /* Actually we don't support unbounded RMA anymore since we added * proper emulation of HV mode. The max we can get is 16G which * also happens to be what we configure for PAPR mode so make sure * we don't do anything bigger than that */ spapr->rma_size = MIN(spapr->rma_size, 0x400000000ull); if (spapr->rma_size > node0_size) { error_report("Numa node 0 has to span the RMA (%#08"HWADDR_PRIx")", spapr->rma_size); exit(1); } /* Setup a load limit for the ramdisk leaving room for SLOF and FDT */ load_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FW_OVERHEAD; /* * VSMT must be set in order to be able to compute VCPU ids, ie to * call spapr_max_server_number() or spapr_vcpu_id(). */ spapr_set_vsmt_mode(spapr, &error_fatal); /* Set up Interrupt Controller before we create the VCPUs */ spapr_irq_init(spapr, &error_fatal); /* Set up containers for ibm,client-architecture-support negotiated options */ spapr->ov5 = spapr_ovec_new(); spapr->ov5_cas = spapr_ovec_new(); if (smc->dr_lmb_enabled) { spapr_ovec_set(spapr->ov5, OV5_DRCONF_MEMORY); spapr_validate_node_memory(machine, &error_fatal); } spapr_ovec_set(spapr->ov5, OV5_FORM1_AFFINITY); /* advertise support for dedicated HP event source to guests */ if (spapr->use_hotplug_event_source) { spapr_ovec_set(spapr->ov5, OV5_HP_EVT); } /* advertise support for HPT resizing */ if (spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) { spapr_ovec_set(spapr->ov5, OV5_HPT_RESIZE); } /* advertise support for ibm,dyamic-memory-v2 */ spapr_ovec_set(spapr->ov5, OV5_DRMEM_V2); /* advertise XIVE on POWER9 machines */ if (spapr->irq->ov5 & SPAPR_OV5_XIVE_EXPLOIT) { if (ppc_type_check_compat(machine->cpu_type, CPU_POWERPC_LOGICAL_3_00, 0, spapr->max_compat_pvr)) { spapr_ovec_set(spapr->ov5, OV5_XIVE_EXPLOIT); } else { error_report("XIVE-only machines require a POWER9 CPU"); exit(1); } } /* init CPUs */ spapr_init_cpus(spapr); if ((!kvm_enabled() || kvmppc_has_cap_mmu_radix()) && ppc_type_check_compat(machine->cpu_type, CPU_POWERPC_LOGICAL_3_00, 0, spapr->max_compat_pvr)) { /* KVM and TCG always allow GTSE with radix... */ spapr_ovec_set(spapr->ov5, OV5_MMU_RADIX_GTSE); } /* ... but not with hash (currently). */ if (kvm_enabled()) { /* Enable H_LOGICAL_CI_* so SLOF can talk to in-kernel devices */ kvmppc_enable_logical_ci_hcalls(); kvmppc_enable_set_mode_hcall(); /* H_CLEAR_MOD/_REF are mandatory in PAPR, but off by default */ kvmppc_enable_clear_ref_mod_hcalls(); } /* allocate RAM */ memory_region_allocate_system_memory(ram, NULL, "ppc_spapr.ram", machine->ram_size); memory_region_add_subregion(sysmem, 0, ram); /* always allocate the device memory information */ machine->device_memory = g_malloc0(sizeof(*machine->device_memory)); /* initialize hotplug memory address space */ if (machine->ram_size < machine->maxram_size) { ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size; /* * Limit the number of hotpluggable memory slots to half the number * slots that KVM supports, leaving the other half for PCI and other * devices. However ensure that number of slots doesn't drop below 32. */ int max_memslots = kvm_enabled() ? kvm_get_max_memslots() / 2 : SPAPR_MAX_RAM_SLOTS; if (max_memslots < SPAPR_MAX_RAM_SLOTS) { max_memslots = SPAPR_MAX_RAM_SLOTS; } if (machine->ram_slots > max_memslots) { error_report("Specified number of memory slots %" PRIu64" exceeds max supported %d", machine->ram_slots, max_memslots); exit(1); } machine->device_memory->base = ROUND_UP(machine->ram_size, SPAPR_DEVICE_MEM_ALIGN); memory_region_init(&machine->device_memory->mr, OBJECT(spapr), "device-memory", device_mem_size); memory_region_add_subregion(sysmem, machine->device_memory->base, &machine->device_memory->mr); } if (smc->dr_lmb_enabled) { spapr_create_lmb_dr_connectors(spapr); } filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "spapr-rtas.bin"); if (!filename) { error_report("Could not find LPAR rtas '%s'", "spapr-rtas.bin"); exit(1); } spapr->rtas_size = get_image_size(filename); if (spapr->rtas_size < 0) { error_report("Could not get size of LPAR rtas '%s'", filename); exit(1); } spapr->rtas_blob = g_malloc(spapr->rtas_size); if (load_image_size(filename, spapr->rtas_blob, spapr->rtas_size) < 0) { error_report("Could not load LPAR rtas '%s'", filename); exit(1); } if (spapr->rtas_size > RTAS_MAX_SIZE) { error_report("RTAS too big ! 0x%zx bytes (max is 0x%x)", (size_t)spapr->rtas_size, RTAS_MAX_SIZE); exit(1); } g_free(filename); /* Set up RTAS event infrastructure */ spapr_events_init(spapr); /* Set up the RTC RTAS interfaces */ spapr_rtc_create(spapr); /* Set up VIO bus */ spapr->vio_bus = spapr_vio_bus_init(); for (i = 0; i < serial_max_hds(); i++) { if (serial_hd(i)) { spapr_vty_create(spapr->vio_bus, serial_hd(i)); } } /* We always have at least the nvram device on VIO */ spapr_create_nvram(spapr); /* Set up PCI */ spapr_pci_rtas_init(); phb = spapr_create_phb(spapr, 0); for (i = 0; i < nb_nics; i++) { NICInfo *nd = &nd_table[i]; if (!nd->model) { nd->model = g_strdup("spapr-vlan"); } if (g_str_equal(nd->model, "spapr-vlan") || g_str_equal(nd->model, "ibmveth")) { spapr_vlan_create(spapr->vio_bus, nd); } else { pci_nic_init_nofail(&nd_table[i], phb->bus, nd->model, NULL); } } for (i = 0; i <= drive_get_max_bus(IF_SCSI); i++) { spapr_vscsi_create(spapr->vio_bus); } /* Graphics */ if (spapr_vga_init(phb->bus, &error_fatal)) { spapr->has_graphics = true; machine->usb |= defaults_enabled() && !machine->usb_disabled; } if (machine->usb) { if (smc->use_ohci_by_default) { pci_create_simple(phb->bus, -1, "pci-ohci"); } else { pci_create_simple(phb->bus, -1, "nec-usb-xhci"); } if (spapr->has_graphics) { USBBus *usb_bus = usb_bus_find(-1); usb_create_simple(usb_bus, "usb-kbd"); usb_create_simple(usb_bus, "usb-mouse"); } } if (spapr->rma_size < (MIN_RMA_SLOF * MiB)) { error_report( "pSeries SLOF firmware requires >= %ldM guest RMA (Real Mode Area memory)", MIN_RMA_SLOF); exit(1); } if (kernel_filename) { uint64_t lowaddr = 0; spapr->kernel_size = load_elf(kernel_filename, translate_kernel_address, NULL, NULL, &lowaddr, NULL, 1, PPC_ELF_MACHINE, 0, 0); if (spapr->kernel_size == ELF_LOAD_WRONG_ENDIAN) { spapr->kernel_size = load_elf(kernel_filename, translate_kernel_address, NULL, NULL, &lowaddr, NULL, 0, PPC_ELF_MACHINE, 0, 0); spapr->kernel_le = spapr->kernel_size > 0; } if (spapr->kernel_size < 0) { error_report("error loading %s: %s", kernel_filename, load_elf_strerror(spapr->kernel_size)); exit(1); } /* load initrd */ if (initrd_filename) { /* Try to locate the initrd in the gap between the kernel * and the firmware. Add a bit of space just in case */ spapr->initrd_base = (KERNEL_LOAD_ADDR + spapr->kernel_size + 0x1ffff) & ~0xffff; spapr->initrd_size = load_image_targphys(initrd_filename, spapr->initrd_base, load_limit - spapr->initrd_base); if (spapr->initrd_size < 0) { error_report("could not load initial ram disk '%s'", initrd_filename); exit(1); } } } if (bios_name == NULL) { bios_name = FW_FILE_NAME; } filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); if (!filename) { error_report("Could not find LPAR firmware '%s'", bios_name); exit(1); } fw_size = load_image_targphys(filename, 0, FW_MAX_SIZE); if (fw_size <= 0) { error_report("Could not load LPAR firmware '%s'", filename); exit(1); } g_free(filename); /* FIXME: Should register things through the MachineState's qdev * interface, this is a legacy from the sPAPREnvironment structure * which predated MachineState but had a similar function */ vmstate_register(NULL, 0, &vmstate_spapr, spapr); register_savevm_live(NULL, "spapr/htab", -1, 1, &savevm_htab_handlers, spapr); qemu_register_boot_set(spapr_boot_set, spapr); if (kvm_enabled()) { /* to stop and start vmclock */ qemu_add_vm_change_state_handler(cpu_ppc_clock_vm_state_change, &spapr->tb); kvmppc_spapr_enable_inkernel_multitce(); } } static int spapr_kvm_type(const char *vm_type) { if (!vm_type) { return 0; } if (!strcmp(vm_type, "HV")) { return 1; } if (!strcmp(vm_type, "PR")) { return 2; } error_report("Unknown kvm-type specified '%s'", vm_type); exit(1); } /* * Implementation of an interface to adjust firmware path * for the bootindex property handling. */ static char *spapr_get_fw_dev_path(FWPathProvider *p, BusState *bus, DeviceState *dev) { #define CAST(type, obj, name) \ ((type *)object_dynamic_cast(OBJECT(obj), (name))) SCSIDevice *d = CAST(SCSIDevice, dev, TYPE_SCSI_DEVICE); sPAPRPHBState *phb = CAST(sPAPRPHBState, dev, TYPE_SPAPR_PCI_HOST_BRIDGE); VHostSCSICommon *vsc = CAST(VHostSCSICommon, dev, TYPE_VHOST_SCSI_COMMON); if (d) { void *spapr = CAST(void, bus->parent, "spapr-vscsi"); VirtIOSCSI *virtio = CAST(VirtIOSCSI, bus->parent, TYPE_VIRTIO_SCSI); USBDevice *usb = CAST(USBDevice, bus->parent, TYPE_USB_DEVICE); if (spapr) { /* * Replace "channel@0/disk@0,0" with "disk@8000000000000000": * We use SRP luns of the form 8000 | (bus << 8) | (id << 5) | lun * in the top 16 bits of the 64-bit LUN */ unsigned id = 0x8000 | (d->id << 8) | d->lun; return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), (uint64_t)id << 48); } else if (virtio) { /* * We use SRP luns of the form 01000000 | (target << 8) | lun * in the top 32 bits of the 64-bit LUN * Note: the quote above is from SLOF and it is wrong, * the actual binding is: * swap 0100 or 10 << or 20 << ( target lun-id -- srplun ) */ unsigned id = 0x1000000 | (d->id << 16) | d->lun; if (d->lun >= 256) { /* Use the LUN "flat space addressing method" */ id |= 0x4000; } return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), (uint64_t)id << 32); } else if (usb) { /* * We use SRP luns of the form 01000000 | (usb-port << 16) | lun * in the top 32 bits of the 64-bit LUN */ unsigned usb_port = atoi(usb->port->path); unsigned id = 0x1000000 | (usb_port << 16) | d->lun; return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), (uint64_t)id << 32); } } /* * SLOF probes the USB devices, and if it recognizes that the device is a * storage device, it changes its name to "storage" instead of "usb-host", * and additionally adds a child node for the SCSI LUN, so the correct * boot path in SLOF is something like .../storage@1/disk@xxx" instead. */ if (strcmp("usb-host", qdev_fw_name(dev)) == 0) { USBDevice *usbdev = CAST(USBDevice, dev, TYPE_USB_DEVICE); if (usb_host_dev_is_scsi_storage(usbdev)) { return g_strdup_printf("storage@%s/disk", usbdev->port->path); } } if (phb) { /* Replace "pci" with "pci@800000020000000" */ return g_strdup_printf("pci@%"PRIX64, phb->buid); } if (vsc) { /* Same logic as virtio above */ unsigned id = 0x1000000 | (vsc->target << 16) | vsc->lun; return g_strdup_printf("disk@%"PRIX64, (uint64_t)id << 32); } if (g_str_equal("pci-bridge", qdev_fw_name(dev))) { /* SLOF uses "pci" instead of "pci-bridge" for PCI bridges */ PCIDevice *pcidev = CAST(PCIDevice, dev, TYPE_PCI_DEVICE); return g_strdup_printf("pci@%x", PCI_SLOT(pcidev->devfn)); } return NULL; } static char *spapr_get_kvm_type(Object *obj, Error **errp) { sPAPRMachineState *spapr = SPAPR_MACHINE(obj); return g_strdup(spapr->kvm_type); } static void spapr_set_kvm_type(Object *obj, const char *value, Error **errp) { sPAPRMachineState *spapr = SPAPR_MACHINE(obj); g_free(spapr->kvm_type); spapr->kvm_type = g_strdup(value); } static bool spapr_get_modern_hotplug_events(Object *obj, Error **errp) { sPAPRMachineState *spapr = SPAPR_MACHINE(obj); return spapr->use_hotplug_event_source; } static void spapr_set_modern_hotplug_events(Object *obj, bool value, Error **errp) { sPAPRMachineState *spapr = SPAPR_MACHINE(obj); spapr->use_hotplug_event_source = value; } static bool spapr_get_msix_emulation(Object *obj, Error **errp) { return true; } static char *spapr_get_resize_hpt(Object *obj, Error **errp) { sPAPRMachineState *spapr = SPAPR_MACHINE(obj); switch (spapr->resize_hpt) { case SPAPR_RESIZE_HPT_DEFAULT: return g_strdup("default"); case SPAPR_RESIZE_HPT_DISABLED: return g_strdup("disabled"); case SPAPR_RESIZE_HPT_ENABLED: return g_strdup("enabled"); case SPAPR_RESIZE_HPT_REQUIRED: return g_strdup("required"); } g_assert_not_reached(); } static void spapr_set_resize_hpt(Object *obj, const char *value, Error **errp) { sPAPRMachineState *spapr = SPAPR_MACHINE(obj); if (strcmp(value, "default") == 0) { spapr->resize_hpt = SPAPR_RESIZE_HPT_DEFAULT; } else if (strcmp(value, "disabled") == 0) { spapr->resize_hpt = SPAPR_RESIZE_HPT_DISABLED; } else if (strcmp(value, "enabled") == 0) { spapr->resize_hpt = SPAPR_RESIZE_HPT_ENABLED; } else if (strcmp(value, "required") == 0) { spapr->resize_hpt = SPAPR_RESIZE_HPT_REQUIRED; } else { error_setg(errp, "Bad value for \"resize-hpt\" property"); } } static void spapr_get_vsmt(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { visit_type_uint32(v, name, (uint32_t *)opaque, errp); } static void spapr_set_vsmt(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { visit_type_uint32(v, name, (uint32_t *)opaque, errp); } static char *spapr_get_ic_mode(Object *obj, Error **errp) { sPAPRMachineState *spapr = SPAPR_MACHINE(obj); if (spapr->irq == &spapr_irq_xics_legacy) { return g_strdup("legacy"); } else if (spapr->irq == &spapr_irq_xics) { return g_strdup("xics"); } else if (spapr->irq == &spapr_irq_xive) { return g_strdup("xive"); } g_assert_not_reached(); } static void spapr_set_ic_mode(Object *obj, const char *value, Error **errp) { sPAPRMachineState *spapr = SPAPR_MACHINE(obj); /* The legacy IRQ backend can not be set */ if (strcmp(value, "xics") == 0) { spapr->irq = &spapr_irq_xics; } else if (strcmp(value, "xive") == 0) { spapr->irq = &spapr_irq_xive; } else { error_setg(errp, "Bad value for \"ic-mode\" property"); } } static void spapr_instance_init(Object *obj) { sPAPRMachineState *spapr = SPAPR_MACHINE(obj); sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); spapr->htab_fd = -1; spapr->use_hotplug_event_source = true; object_property_add_str(obj, "kvm-type", spapr_get_kvm_type, spapr_set_kvm_type, NULL); object_property_set_description(obj, "kvm-type", "Specifies the KVM virtualization mode (HV, PR)", NULL); object_property_add_bool(obj, "modern-hotplug-events", spapr_get_modern_hotplug_events, spapr_set_modern_hotplug_events, NULL); object_property_set_description(obj, "modern-hotplug-events", "Use dedicated hotplug event mechanism in" " place of standard EPOW events when possible" " (required for memory hot-unplug support)", NULL); ppc_compat_add_property(obj, "max-cpu-compat", &spapr->max_compat_pvr, "Maximum permitted CPU compatibility mode", &error_fatal); object_property_add_str(obj, "resize-hpt", spapr_get_resize_hpt, spapr_set_resize_hpt, NULL); object_property_set_description(obj, "resize-hpt", "Resizing of the Hash Page Table (enabled, disabled, required)", NULL); object_property_add(obj, "vsmt", "uint32", spapr_get_vsmt, spapr_set_vsmt, NULL, &spapr->vsmt, &error_abort); object_property_set_description(obj, "vsmt", "Virtual SMT: KVM behaves as if this were" " the host's SMT mode", &error_abort); object_property_add_bool(obj, "vfio-no-msix-emulation", spapr_get_msix_emulation, NULL, NULL); /* The machine class defines the default interrupt controller mode */ spapr->irq = smc->irq; object_property_add_str(obj, "ic-mode", spapr_get_ic_mode, spapr_set_ic_mode, NULL); object_property_set_description(obj, "ic-mode", "Specifies the interrupt controller mode (xics, xive)", NULL); } static void spapr_machine_finalizefn(Object *obj) { sPAPRMachineState *spapr = SPAPR_MACHINE(obj); g_free(spapr->kvm_type); } void spapr_do_system_reset_on_cpu(CPUState *cs, run_on_cpu_data arg) { cpu_synchronize_state(cs); ppc_cpu_do_system_reset(cs); } static void spapr_nmi(NMIState *n, int cpu_index, Error **errp) { CPUState *cs; CPU_FOREACH(cs) { async_run_on_cpu(cs, spapr_do_system_reset_on_cpu, RUN_ON_CPU_NULL); } } static void spapr_add_lmbs(DeviceState *dev, uint64_t addr_start, uint64_t size, uint32_t node, bool dedicated_hp_event_source, Error **errp) { sPAPRDRConnector *drc; uint32_t nr_lmbs = size/SPAPR_MEMORY_BLOCK_SIZE; int i, fdt_offset, fdt_size; void *fdt; uint64_t addr = addr_start; bool hotplugged = spapr_drc_hotplugged(dev); Error *local_err = NULL; for (i = 0; i < nr_lmbs; i++) { drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, addr / SPAPR_MEMORY_BLOCK_SIZE); g_assert(drc); fdt = create_device_tree(&fdt_size); fdt_offset = spapr_populate_memory_node(fdt, node, addr, SPAPR_MEMORY_BLOCK_SIZE); spapr_drc_attach(drc, dev, fdt, fdt_offset, &local_err); if (local_err) { while (addr > addr_start) { addr -= SPAPR_MEMORY_BLOCK_SIZE; drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, addr / SPAPR_MEMORY_BLOCK_SIZE); spapr_drc_detach(drc); } g_free(fdt); error_propagate(errp, local_err); return; } if (!hotplugged) { spapr_drc_reset(drc); } addr += SPAPR_MEMORY_BLOCK_SIZE; } /* send hotplug notification to the * guest only in case of hotplugged memory */ if (hotplugged) { if (dedicated_hp_event_source) { drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, addr_start / SPAPR_MEMORY_BLOCK_SIZE); spapr_hotplug_req_add_by_count_indexed(SPAPR_DR_CONNECTOR_TYPE_LMB, nr_lmbs, spapr_drc_index(drc)); } else { spapr_hotplug_req_add_by_count(SPAPR_DR_CONNECTOR_TYPE_LMB, nr_lmbs); } } } static void spapr_memory_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { Error *local_err = NULL; sPAPRMachineState *ms = SPAPR_MACHINE(hotplug_dev); PCDIMMDevice *dimm = PC_DIMM(dev); uint64_t size, addr; uint32_t node; size = memory_device_get_region_size(MEMORY_DEVICE(dev), &error_abort); pc_dimm_plug(dimm, MACHINE(ms), &local_err); if (local_err) { goto out; } addr = object_property_get_uint(OBJECT(dimm), PC_DIMM_ADDR_PROP, &local_err); if (local_err) { goto out_unplug; } node = object_property_get_uint(OBJECT(dev), PC_DIMM_NODE_PROP, &error_abort); spapr_add_lmbs(dev, addr, size, node, spapr_ovec_test(ms->ov5_cas, OV5_HP_EVT), &local_err); if (local_err) { goto out_unplug; } return; out_unplug: pc_dimm_unplug(dimm, MACHINE(ms)); out: error_propagate(errp, local_err); } static void spapr_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { const sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(hotplug_dev); sPAPRMachineState *spapr = SPAPR_MACHINE(hotplug_dev); PCDIMMDevice *dimm = PC_DIMM(dev); Error *local_err = NULL; uint64_t size; Object *memdev; hwaddr pagesize; if (!smc->dr_lmb_enabled) { error_setg(errp, "Memory hotplug not supported for this machine"); return; } size = memory_device_get_region_size(MEMORY_DEVICE(dimm), &local_err); if (local_err) { error_propagate(errp, local_err); return; } if (size % SPAPR_MEMORY_BLOCK_SIZE) { error_setg(errp, "Hotplugged memory size must be a multiple of " "%" PRIu64 " MB", SPAPR_MEMORY_BLOCK_SIZE / MiB); return; } memdev = object_property_get_link(OBJECT(dimm), PC_DIMM_MEMDEV_PROP, &error_abort); pagesize = host_memory_backend_pagesize(MEMORY_BACKEND(memdev)); spapr_check_pagesize(spapr, pagesize, &local_err); if (local_err) { error_propagate(errp, local_err); return; } pc_dimm_pre_plug(dimm, MACHINE(hotplug_dev), NULL, errp); } struct sPAPRDIMMState { PCDIMMDevice *dimm; uint32_t nr_lmbs; QTAILQ_ENTRY(sPAPRDIMMState) next; }; static sPAPRDIMMState *spapr_pending_dimm_unplugs_find(sPAPRMachineState *s, PCDIMMDevice *dimm) { sPAPRDIMMState *dimm_state = NULL; QTAILQ_FOREACH(dimm_state, &s->pending_dimm_unplugs, next) { if (dimm_state->dimm == dimm) { break; } } return dimm_state; } static sPAPRDIMMState *spapr_pending_dimm_unplugs_add(sPAPRMachineState *spapr, uint32_t nr_lmbs, PCDIMMDevice *dimm) { sPAPRDIMMState *ds = NULL; /* * If this request is for a DIMM whose removal had failed earlier * (due to guest's refusal to remove the LMBs), we would have this * dimm already in the pending_dimm_unplugs list. In that * case don't add again. */ ds = spapr_pending_dimm_unplugs_find(spapr, dimm); if (!ds) { ds = g_malloc0(sizeof(sPAPRDIMMState)); ds->nr_lmbs = nr_lmbs; ds->dimm = dimm; QTAILQ_INSERT_HEAD(&spapr->pending_dimm_unplugs, ds, next); } return ds; } static void spapr_pending_dimm_unplugs_remove(sPAPRMachineState *spapr, sPAPRDIMMState *dimm_state) { QTAILQ_REMOVE(&spapr->pending_dimm_unplugs, dimm_state, next); g_free(dimm_state); } static sPAPRDIMMState *spapr_recover_pending_dimm_state(sPAPRMachineState *ms, PCDIMMDevice *dimm) { sPAPRDRConnector *drc; uint64_t size = memory_device_get_region_size(MEMORY_DEVICE(dimm), &error_abort); uint32_t nr_lmbs = size / SPAPR_MEMORY_BLOCK_SIZE; uint32_t avail_lmbs = 0; uint64_t addr_start, addr; int i; addr_start = object_property_get_int(OBJECT(dimm), PC_DIMM_ADDR_PROP, &error_abort); addr = addr_start; for (i = 0; i < nr_lmbs; i++) { drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, addr / SPAPR_MEMORY_BLOCK_SIZE); g_assert(drc); if (drc->dev) { avail_lmbs++; } addr += SPAPR_MEMORY_BLOCK_SIZE; } return spapr_pending_dimm_unplugs_add(ms, avail_lmbs, dimm); } /* Callback to be called during DRC release. */ void spapr_lmb_release(DeviceState *dev) { HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); sPAPRMachineState *spapr = SPAPR_MACHINE(hotplug_ctrl); sPAPRDIMMState *ds = spapr_pending_dimm_unplugs_find(spapr, PC_DIMM(dev)); /* This information will get lost if a migration occurs * during the unplug process. In this case recover it. */ if (ds == NULL) { ds = spapr_recover_pending_dimm_state(spapr, PC_DIMM(dev)); g_assert(ds); /* The DRC being examined by the caller at least must be counted */ g_assert(ds->nr_lmbs); } if (--ds->nr_lmbs) { return; } /* * Now that all the LMBs have been removed by the guest, call the * unplug handler chain. This can never fail. */ hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); } static void spapr_memory_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) { sPAPRMachineState *spapr = SPAPR_MACHINE(hotplug_dev); sPAPRDIMMState *ds = spapr_pending_dimm_unplugs_find(spapr, PC_DIMM(dev)); pc_dimm_unplug(PC_DIMM(dev), MACHINE(hotplug_dev)); object_unparent(OBJECT(dev)); spapr_pending_dimm_unplugs_remove(spapr, ds); } static void spapr_memory_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { sPAPRMachineState *spapr = SPAPR_MACHINE(hotplug_dev); Error *local_err = NULL; PCDIMMDevice *dimm = PC_DIMM(dev); uint32_t nr_lmbs; uint64_t size, addr_start, addr; int i; sPAPRDRConnector *drc; size = memory_device_get_region_size(MEMORY_DEVICE(dimm), &error_abort); nr_lmbs = size / SPAPR_MEMORY_BLOCK_SIZE; addr_start = object_property_get_uint(OBJECT(dimm), PC_DIMM_ADDR_PROP, &local_err); if (local_err) { goto out; } /* * An existing pending dimm state for this DIMM means that there is an * unplug operation in progress, waiting for the spapr_lmb_release * callback to complete the job (BQL can't cover that far). In this case, * bail out to avoid detaching DRCs that were already released. */ if (spapr_pending_dimm_unplugs_find(spapr, dimm)) { error_setg(&local_err, "Memory unplug already in progress for device %s", dev->id); goto out; } spapr_pending_dimm_unplugs_add(spapr, nr_lmbs, dimm); addr = addr_start; for (i = 0; i < nr_lmbs; i++) { drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, addr / SPAPR_MEMORY_BLOCK_SIZE); g_assert(drc); spapr_drc_detach(drc); addr += SPAPR_MEMORY_BLOCK_SIZE; } drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, addr_start / SPAPR_MEMORY_BLOCK_SIZE); spapr_hotplug_req_remove_by_count_indexed(SPAPR_DR_CONNECTOR_TYPE_LMB, nr_lmbs, spapr_drc_index(drc)); out: error_propagate(errp, local_err); } static void *spapr_populate_hotplug_cpu_dt(CPUState *cs, int *fdt_offset, sPAPRMachineState *spapr) { PowerPCCPU *cpu = POWERPC_CPU(cs); DeviceClass *dc = DEVICE_GET_CLASS(cs); int id = spapr_get_vcpu_id(cpu); void *fdt; int offset, fdt_size; char *nodename; fdt = create_device_tree(&fdt_size); nodename = g_strdup_printf("%s@%x", dc->fw_name, id); offset = fdt_add_subnode(fdt, 0, nodename); spapr_populate_cpu_dt(cs, fdt, offset, spapr); g_free(nodename); *fdt_offset = offset; return fdt; } /* Callback to be called during DRC release. */ void spapr_core_release(DeviceState *dev) { HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); /* Call the unplug handler chain. This can never fail. */ hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); } static void spapr_core_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) { MachineState *ms = MACHINE(hotplug_dev); sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(ms); CPUCore *cc = CPU_CORE(dev); CPUArchId *core_slot = spapr_find_cpu_slot(ms, cc->core_id, NULL); if (smc->pre_2_10_has_unused_icps) { sPAPRCPUCore *sc = SPAPR_CPU_CORE(OBJECT(dev)); int i; for (i = 0; i < cc->nr_threads; i++) { CPUState *cs = CPU(sc->threads[i]); pre_2_10_vmstate_register_dummy_icp(cs->cpu_index); } } assert(core_slot); core_slot->cpu = NULL; object_unparent(OBJECT(dev)); } static void spapr_core_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { sPAPRMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); int index; sPAPRDRConnector *drc; CPUCore *cc = CPU_CORE(dev); if (!spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index)) { error_setg(errp, "Unable to find CPU core with core-id: %d", cc->core_id); return; } if (index == 0) { error_setg(errp, "Boot CPU core may not be unplugged"); return; } drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, spapr_vcpu_id(spapr, cc->core_id)); g_assert(drc); spapr_drc_detach(drc); spapr_hotplug_req_remove_by_index(drc); } static void spapr_core_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { sPAPRMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); MachineClass *mc = MACHINE_GET_CLASS(spapr); sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); sPAPRCPUCore *core = SPAPR_CPU_CORE(OBJECT(dev)); CPUCore *cc = CPU_CORE(dev); CPUState *cs = CPU(core->threads[0]); sPAPRDRConnector *drc; Error *local_err = NULL; CPUArchId *core_slot; int index; bool hotplugged = spapr_drc_hotplugged(dev); core_slot = spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index); if (!core_slot) { error_setg(errp, "Unable to find CPU core with core-id: %d", cc->core_id); return; } drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, spapr_vcpu_id(spapr, cc->core_id)); g_assert(drc || !mc->has_hotpluggable_cpus); if (drc) { void *fdt; int fdt_offset; fdt = spapr_populate_hotplug_cpu_dt(cs, &fdt_offset, spapr); spapr_drc_attach(drc, dev, fdt, fdt_offset, &local_err); if (local_err) { g_free(fdt); error_propagate(errp, local_err); return; } if (hotplugged) { /* * Send hotplug notification interrupt to the guest only * in case of hotplugged CPUs. */ spapr_hotplug_req_add_by_index(drc); } else { spapr_drc_reset(drc); } } core_slot->cpu = OBJECT(dev); if (smc->pre_2_10_has_unused_icps) { int i; for (i = 0; i < cc->nr_threads; i++) { cs = CPU(core->threads[i]); pre_2_10_vmstate_unregister_dummy_icp(cs->cpu_index); } } } static void spapr_core_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { MachineState *machine = MACHINE(OBJECT(hotplug_dev)); MachineClass *mc = MACHINE_GET_CLASS(hotplug_dev); Error *local_err = NULL; CPUCore *cc = CPU_CORE(dev); const char *base_core_type = spapr_get_cpu_core_type(machine->cpu_type); const char *type = object_get_typename(OBJECT(dev)); CPUArchId *core_slot; int index; if (dev->hotplugged && !mc->has_hotpluggable_cpus) { error_setg(&local_err, "CPU hotplug not supported for this machine"); goto out; } if (strcmp(base_core_type, type)) { error_setg(&local_err, "CPU core type should be %s", base_core_type); goto out; } if (cc->core_id % smp_threads) { error_setg(&local_err, "invalid core id %d", cc->core_id); goto out; } /* * In general we should have homogeneous threads-per-core, but old * (pre hotplug support) machine types allow the last core to have * reduced threads as a compatibility hack for when we allowed * total vcpus not a multiple of threads-per-core. */ if (mc->has_hotpluggable_cpus && (cc->nr_threads != smp_threads)) { error_setg(&local_err, "invalid nr-threads %d, must be %d", cc->nr_threads, smp_threads); goto out; } core_slot = spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index); if (!core_slot) { error_setg(&local_err, "core id %d out of range", cc->core_id); goto out; } if (core_slot->cpu) { error_setg(&local_err, "core %d already populated", cc->core_id); goto out; } numa_cpu_pre_plug(core_slot, dev, &local_err); out: error_propagate(errp, local_err); } static void spapr_machine_device_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { spapr_memory_plug(hotplug_dev, dev, errp); } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { spapr_core_plug(hotplug_dev, dev, errp); } } static void spapr_machine_device_unplug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { spapr_memory_unplug(hotplug_dev, dev); } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { spapr_core_unplug(hotplug_dev, dev); } } static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { sPAPRMachineState *sms = SPAPR_MACHINE(OBJECT(hotplug_dev)); MachineClass *mc = MACHINE_GET_CLASS(sms); if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { if (spapr_ovec_test(sms->ov5_cas, OV5_HP_EVT)) { spapr_memory_unplug_request(hotplug_dev, dev, errp); } else { /* NOTE: this means there is a window after guest reset, prior to * CAS negotiation, where unplug requests will fail due to the * capability not being detected yet. This is a bit different than * the case with PCI unplug, where the events will be queued and * eventually handled by the guest after boot */ error_setg(errp, "Memory hot unplug not supported for this guest"); } } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { if (!mc->has_hotpluggable_cpus) { error_setg(errp, "CPU hot unplug not supported on this machine"); return; } spapr_core_unplug_request(hotplug_dev, dev, errp); } } static void spapr_machine_device_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { spapr_memory_pre_plug(hotplug_dev, dev, errp); } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { spapr_core_pre_plug(hotplug_dev, dev, errp); } } static HotplugHandler *spapr_get_hotplug_handler(MachineState *machine, DeviceState *dev) { if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) || object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { return HOTPLUG_HANDLER(machine); } return NULL; } static CpuInstanceProperties spapr_cpu_index_to_props(MachineState *machine, unsigned cpu_index) { CPUArchId *core_slot; MachineClass *mc = MACHINE_GET_CLASS(machine); /* make sure possible_cpu are intialized */ mc->possible_cpu_arch_ids(machine); /* get CPU core slot containing thread that matches cpu_index */ core_slot = spapr_find_cpu_slot(machine, cpu_index, NULL); assert(core_slot); return core_slot->props; } static int64_t spapr_get_default_cpu_node_id(const MachineState *ms, int idx) { return idx / smp_cores % nb_numa_nodes; } static const CPUArchIdList *spapr_possible_cpu_arch_ids(MachineState *machine) { int i; const char *core_type; int spapr_max_cores = max_cpus / smp_threads; MachineClass *mc = MACHINE_GET_CLASS(machine); if (!mc->has_hotpluggable_cpus) { spapr_max_cores = QEMU_ALIGN_UP(smp_cpus, smp_threads) / smp_threads; } if (machine->possible_cpus) { assert(machine->possible_cpus->len == spapr_max_cores); return machine->possible_cpus; } core_type = spapr_get_cpu_core_type(machine->cpu_type); if (!core_type) { error_report("Unable to find sPAPR CPU Core definition"); exit(1); } machine->possible_cpus = g_malloc0(sizeof(CPUArchIdList) + sizeof(CPUArchId) * spapr_max_cores); machine->possible_cpus->len = spapr_max_cores; for (i = 0; i < machine->possible_cpus->len; i++) { int core_id = i * smp_threads; machine->possible_cpus->cpus[i].type = core_type; machine->possible_cpus->cpus[i].vcpus_count = smp_threads; machine->possible_cpus->cpus[i].arch_id = core_id; machine->possible_cpus->cpus[i].props.has_core_id = true; machine->possible_cpus->cpus[i].props.core_id = core_id; } return machine->possible_cpus; } static void spapr_phb_placement(sPAPRMachineState *spapr, uint32_t index, uint64_t *buid, hwaddr *pio, hwaddr *mmio32, hwaddr *mmio64, unsigned n_dma, uint32_t *liobns, Error **errp) { /* * New-style PHB window placement. * * Goals: Gives large (1TiB), naturally aligned 64-bit MMIO window * for each PHB, in addition to 2GiB 32-bit MMIO and 64kiB PIO * windows. * * Some guest kernels can't work with MMIO windows above 1<<46 * (64TiB), so we place up to 31 PHBs in the area 32TiB..64TiB * * 32TiB..(33TiB+1984kiB) contains the 64kiB PIO windows for each * PHB stacked together. (32TiB+2GiB)..(32TiB+64GiB) contains the * 2GiB 32-bit MMIO windows for each PHB. Then 33..64TiB has the * 1TiB 64-bit MMIO windows for each PHB. */ const uint64_t base_buid = 0x800000020000000ULL; #define SPAPR_MAX_PHBS ((SPAPR_PCI_LIMIT - SPAPR_PCI_BASE) / \ SPAPR_PCI_MEM64_WIN_SIZE - 1) int i; /* Sanity check natural alignments */ QEMU_BUILD_BUG_ON((SPAPR_PCI_BASE % SPAPR_PCI_MEM64_WIN_SIZE) != 0); QEMU_BUILD_BUG_ON((SPAPR_PCI_LIMIT % SPAPR_PCI_MEM64_WIN_SIZE) != 0); QEMU_BUILD_BUG_ON((SPAPR_PCI_MEM64_WIN_SIZE % SPAPR_PCI_MEM32_WIN_SIZE) != 0); QEMU_BUILD_BUG_ON((SPAPR_PCI_MEM32_WIN_SIZE % SPAPR_PCI_IO_WIN_SIZE) != 0); /* Sanity check bounds */ QEMU_BUILD_BUG_ON((SPAPR_MAX_PHBS * SPAPR_PCI_IO_WIN_SIZE) > SPAPR_PCI_MEM32_WIN_SIZE); QEMU_BUILD_BUG_ON((SPAPR_MAX_PHBS * SPAPR_PCI_MEM32_WIN_SIZE) > SPAPR_PCI_MEM64_WIN_SIZE); if (index >= SPAPR_MAX_PHBS) { error_setg(errp, "\"index\" for PAPR PHB is too large (max %llu)", SPAPR_MAX_PHBS - 1); return; } *buid = base_buid + index; for (i = 0; i < n_dma; ++i) { liobns[i] = SPAPR_PCI_LIOBN(index, i); } *pio = SPAPR_PCI_BASE + index * SPAPR_PCI_IO_WIN_SIZE; *mmio32 = SPAPR_PCI_BASE + (index + 1) * SPAPR_PCI_MEM32_WIN_SIZE; *mmio64 = SPAPR_PCI_BASE + (index + 1) * SPAPR_PCI_MEM64_WIN_SIZE; } static ICSState *spapr_ics_get(XICSFabric *dev, int irq) { sPAPRMachineState *spapr = SPAPR_MACHINE(dev); return ics_valid_irq(spapr->ics, irq) ? spapr->ics : NULL; } static void spapr_ics_resend(XICSFabric *dev) { sPAPRMachineState *spapr = SPAPR_MACHINE(dev); ics_resend(spapr->ics); } static ICPState *spapr_icp_get(XICSFabric *xi, int vcpu_id) { PowerPCCPU *cpu = spapr_find_cpu(vcpu_id); return cpu ? ICP(cpu->intc) : NULL; } static void spapr_pic_print_info(InterruptStatsProvider *obj, Monitor *mon) { sPAPRMachineState *spapr = SPAPR_MACHINE(obj); spapr->irq->print_info(spapr, mon); } int spapr_get_vcpu_id(PowerPCCPU *cpu) { return cpu->vcpu_id; } void spapr_set_vcpu_id(PowerPCCPU *cpu, int cpu_index, Error **errp) { sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); int vcpu_id; vcpu_id = spapr_vcpu_id(spapr, cpu_index); if (kvm_enabled() && !kvm_vcpu_id_is_valid(vcpu_id)) { error_setg(errp, "Can't create CPU with id %d in KVM", vcpu_id); error_append_hint(errp, "Adjust the number of cpus to %d " "or try to raise the number of threads per core\n", vcpu_id * smp_threads / spapr->vsmt); return; } cpu->vcpu_id = vcpu_id; } PowerPCCPU *spapr_find_cpu(int vcpu_id) { CPUState *cs; CPU_FOREACH(cs) { PowerPCCPU *cpu = POWERPC_CPU(cs); if (spapr_get_vcpu_id(cpu) == vcpu_id) { return cpu; } } return NULL; } static void spapr_machine_class_init(ObjectClass *oc, void *data) { MachineClass *mc = MACHINE_CLASS(oc); sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(oc); FWPathProviderClass *fwc = FW_PATH_PROVIDER_CLASS(oc); NMIClass *nc = NMI_CLASS(oc); HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); PPCVirtualHypervisorClass *vhc = PPC_VIRTUAL_HYPERVISOR_CLASS(oc); XICSFabricClass *xic = XICS_FABRIC_CLASS(oc); InterruptStatsProviderClass *ispc = INTERRUPT_STATS_PROVIDER_CLASS(oc); mc->desc = "pSeries Logical Partition (PAPR compliant)"; mc->ignore_boot_device_suffixes = true; /* * We set up the default / latest behaviour here. The class_init * functions for the specific versioned machine types can override * these details for backwards compatibility */ mc->init = spapr_machine_init; mc->reset = spapr_machine_reset; mc->block_default_type = IF_SCSI; mc->max_cpus = 1024; mc->no_parallel = 1; mc->default_boot_order = ""; mc->default_ram_size = 512 * MiB; mc->default_display = "std"; mc->kvm_type = spapr_kvm_type; machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SPAPR_PCI_HOST_BRIDGE); mc->pci_allow_0_address = true; assert(!mc->get_hotplug_handler); mc->get_hotplug_handler = spapr_get_hotplug_handler; hc->pre_plug = spapr_machine_device_pre_plug; hc->plug = spapr_machine_device_plug; mc->cpu_index_to_instance_props = spapr_cpu_index_to_props; mc->get_default_cpu_node_id = spapr_get_default_cpu_node_id; mc->possible_cpu_arch_ids = spapr_possible_cpu_arch_ids; hc->unplug_request = spapr_machine_device_unplug_request; hc->unplug = spapr_machine_device_unplug; smc->dr_lmb_enabled = true; mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power9_v2.0"); mc->has_hotpluggable_cpus = true; smc->resize_hpt_default = SPAPR_RESIZE_HPT_ENABLED; fwc->get_dev_path = spapr_get_fw_dev_path; nc->nmi_monitor_handler = spapr_nmi; smc->phb_placement = spapr_phb_placement; vhc->hypercall = emulate_spapr_hypercall; vhc->hpt_mask = spapr_hpt_mask; vhc->map_hptes = spapr_map_hptes; vhc->unmap_hptes = spapr_unmap_hptes; vhc->store_hpte = spapr_store_hpte; vhc->get_patbe = spapr_get_patbe; vhc->encode_hpt_for_kvm_pr = spapr_encode_hpt_for_kvm_pr; xic->ics_get = spapr_ics_get; xic->ics_resend = spapr_ics_resend; xic->icp_get = spapr_icp_get; ispc->print_info = spapr_pic_print_info; /* Force NUMA node memory size to be a multiple of * SPAPR_MEMORY_BLOCK_SIZE (256M) since that's the granularity * in which LMBs are represented and hot-added */ mc->numa_mem_align_shift = 28; smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_OFF; smc->default_caps.caps[SPAPR_CAP_VSX] = SPAPR_CAP_ON; smc->default_caps.caps[SPAPR_CAP_DFP] = SPAPR_CAP_ON; smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_BROKEN; smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_BROKEN; smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_BROKEN; smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] = 16; /* 64kiB */ smc->default_caps.caps[SPAPR_CAP_NESTED_KVM_HV] = SPAPR_CAP_OFF; spapr_caps_add_properties(smc, &error_abort); smc->irq = &spapr_irq_xics; } static const TypeInfo spapr_machine_info = { .name = TYPE_SPAPR_MACHINE, .parent = TYPE_MACHINE, .abstract = true, .instance_size = sizeof(sPAPRMachineState), .instance_init = spapr_instance_init, .instance_finalize = spapr_machine_finalizefn, .class_size = sizeof(sPAPRMachineClass), .class_init = spapr_machine_class_init, .interfaces = (InterfaceInfo[]) { { TYPE_FW_PATH_PROVIDER }, { TYPE_NMI }, { TYPE_HOTPLUG_HANDLER }, { TYPE_PPC_VIRTUAL_HYPERVISOR }, { TYPE_XICS_FABRIC }, { TYPE_INTERRUPT_STATS_PROVIDER }, { } }, }; #define DEFINE_SPAPR_MACHINE(suffix, verstr, latest) \ static void spapr_machine_##suffix##_class_init(ObjectClass *oc, \ void *data) \ { \ MachineClass *mc = MACHINE_CLASS(oc); \ spapr_machine_##suffix##_class_options(mc); \ if (latest) { \ mc->alias = "pseries"; \ mc->is_default = 1; \ } \ } \ static const TypeInfo spapr_machine_##suffix##_info = { \ .name = MACHINE_TYPE_NAME("pseries-" verstr), \ .parent = TYPE_SPAPR_MACHINE, \ .class_init = spapr_machine_##suffix##_class_init, \ }; \ static void spapr_machine_register_##suffix(void) \ { \ type_register(&spapr_machine_##suffix##_info); \ } \ type_init(spapr_machine_register_##suffix) /* * pseries-4.0 */ static void spapr_machine_4_0_class_options(MachineClass *mc) { /* Defaults for the latest behaviour inherited from the base class */ } DEFINE_SPAPR_MACHINE(4_0, "4.0", true); /* * pseries-3.1 */ static void spapr_machine_3_1_class_options(MachineClass *mc) { spapr_machine_4_0_class_options(mc); compat_props_add(mc->compat_props, hw_compat_3_1, hw_compat_3_1_len); mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power8_v2.0"); } DEFINE_SPAPR_MACHINE(3_1, "3.1", false); /* * pseries-3.0 */ static void spapr_machine_3_0_class_options(MachineClass *mc) { sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); spapr_machine_3_1_class_options(mc); compat_props_add(mc->compat_props, hw_compat_3_0, hw_compat_3_0_len); smc->legacy_irq_allocation = true; smc->irq = &spapr_irq_xics_legacy; } DEFINE_SPAPR_MACHINE(3_0, "3.0", false); /* * pseries-2.12 */ static void spapr_machine_2_12_class_options(MachineClass *mc) { sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); static GlobalProperty compat[] = { { .driver = TYPE_POWERPC_CPU, .property = "pre-3.0-migration", .value = "on", }, { .driver = TYPE_SPAPR_CPU_CORE, .property = "pre-3.0-migration", .value = "on", }, }; spapr_machine_3_0_class_options(mc); compat_props_add(mc->compat_props, hw_compat_2_12, hw_compat_2_12_len); compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); /* We depend on kvm_enabled() to choose a default value for the * hpt-max-page-size capability. Of course we can't do it here * because this is too early and the HW accelerator isn't initialzed * yet. Postpone this to machine init (see default_caps_with_cpu()). */ smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] = 0; } DEFINE_SPAPR_MACHINE(2_12, "2.12", false); static void spapr_machine_2_12_sxxm_class_options(MachineClass *mc) { sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); spapr_machine_2_12_class_options(mc); smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_WORKAROUND; smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_WORKAROUND; smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_FIXED_CCD; } DEFINE_SPAPR_MACHINE(2_12_sxxm, "2.12-sxxm", false); /* * pseries-2.11 */ static void spapr_machine_2_11_class_options(MachineClass *mc) { sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); spapr_machine_2_12_class_options(mc); smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_ON; compat_props_add(mc->compat_props, hw_compat_2_11, hw_compat_2_11_len); } DEFINE_SPAPR_MACHINE(2_11, "2.11", false); /* * pseries-2.10 */ static void spapr_machine_2_10_class_options(MachineClass *mc) { spapr_machine_2_11_class_options(mc); compat_props_add(mc->compat_props, hw_compat_2_10, hw_compat_2_10_len); } DEFINE_SPAPR_MACHINE(2_10, "2.10", false); /* * pseries-2.9 */ static void spapr_machine_2_9_class_options(MachineClass *mc) { sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); static GlobalProperty compat[] = { { .driver = TYPE_POWERPC_CPU, .property = "pre-2.10-migration", .value = "on", }, }; spapr_machine_2_10_class_options(mc); compat_props_add(mc->compat_props, hw_compat_2_9, hw_compat_2_9_len); compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); mc->numa_auto_assign_ram = numa_legacy_auto_assign_ram; smc->pre_2_10_has_unused_icps = true; smc->resize_hpt_default = SPAPR_RESIZE_HPT_DISABLED; } DEFINE_SPAPR_MACHINE(2_9, "2.9", false); /* * pseries-2.8 */ static void spapr_machine_2_8_class_options(MachineClass *mc) { static GlobalProperty compat[] = { { .driver = TYPE_SPAPR_PCI_HOST_BRIDGE, .property = "pcie-extended-configuration-space", .value = "off", }, }; spapr_machine_2_9_class_options(mc); compat_props_add(mc->compat_props, hw_compat_2_8, hw_compat_2_8_len); compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); mc->numa_mem_align_shift = 23; } DEFINE_SPAPR_MACHINE(2_8, "2.8", false); /* * pseries-2.7 */ static void phb_placement_2_7(sPAPRMachineState *spapr, uint32_t index, uint64_t *buid, hwaddr *pio, hwaddr *mmio32, hwaddr *mmio64, unsigned n_dma, uint32_t *liobns, Error **errp) { /* Legacy PHB placement for pseries-2.7 and earlier machine types */ const uint64_t base_buid = 0x800000020000000ULL; const hwaddr phb_spacing = 0x1000000000ULL; /* 64 GiB */ const hwaddr mmio_offset = 0xa0000000; /* 2 GiB + 512 MiB */ const hwaddr pio_offset = 0x80000000; /* 2 GiB */ const uint32_t max_index = 255; const hwaddr phb0_alignment = 0x10000000000ULL; /* 1 TiB */ uint64_t ram_top = MACHINE(spapr)->ram_size; hwaddr phb0_base, phb_base; int i; /* Do we have device memory? */ if (MACHINE(spapr)->maxram_size > ram_top) { /* Can't just use maxram_size, because there may be an * alignment gap between normal and device memory regions */ ram_top = MACHINE(spapr)->device_memory->base + memory_region_size(&MACHINE(spapr)->device_memory->mr); } phb0_base = QEMU_ALIGN_UP(ram_top, phb0_alignment); if (index > max_index) { error_setg(errp, "\"index\" for PAPR PHB is too large (max %u)", max_index); return; } *buid = base_buid + index; for (i = 0; i < n_dma; ++i) { liobns[i] = SPAPR_PCI_LIOBN(index, i); } phb_base = phb0_base + index * phb_spacing; *pio = phb_base + pio_offset; *mmio32 = phb_base + mmio_offset; /* * We don't set the 64-bit MMIO window, relying on the PHB's * fallback behaviour of automatically splitting a large "32-bit" * window into contiguous 32-bit and 64-bit windows */ } static void spapr_machine_2_7_class_options(MachineClass *mc) { sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); static GlobalProperty compat[] = { { .driver = TYPE_SPAPR_PCI_HOST_BRIDGE, .property = "mem_win_size", .value = stringify(SPAPR_PCI_2_7_MMIO_WIN_SIZE), }, { .driver = TYPE_SPAPR_PCI_HOST_BRIDGE, .property = "mem64_win_size", .value = "0", }, { .driver = TYPE_POWERPC_CPU, .property = "pre-2.8-migration", .value = "on", }, { .driver = TYPE_SPAPR_PCI_HOST_BRIDGE, .property = "pre-2.8-migration", .value = "on", }, }; spapr_machine_2_8_class_options(mc); mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power7_v2.3"); mc->default_machine_opts = "modern-hotplug-events=off"; compat_props_add(mc->compat_props, hw_compat_2_7, hw_compat_2_7_len); compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); smc->phb_placement = phb_placement_2_7; } DEFINE_SPAPR_MACHINE(2_7, "2.7", false); /* * pseries-2.6 */ static void spapr_machine_2_6_class_options(MachineClass *mc) { static GlobalProperty compat[] = { { .driver = TYPE_SPAPR_PCI_HOST_BRIDGE, .property = "ddw", .value = stringify(off), }, }; spapr_machine_2_7_class_options(mc); mc->has_hotpluggable_cpus = false; compat_props_add(mc->compat_props, hw_compat_2_6, hw_compat_2_6_len); compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); } DEFINE_SPAPR_MACHINE(2_6, "2.6", false); /* * pseries-2.5 */ static void spapr_machine_2_5_class_options(MachineClass *mc) { sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); static GlobalProperty compat[] = { { .driver = "spapr-vlan", .property = "use-rx-buffer-pools", .value = "off", }, }; spapr_machine_2_6_class_options(mc); smc->use_ohci_by_default = true; compat_props_add(mc->compat_props, hw_compat_2_5, hw_compat_2_5_len); compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); } DEFINE_SPAPR_MACHINE(2_5, "2.5", false); /* * pseries-2.4 */ static void spapr_machine_2_4_class_options(MachineClass *mc) { sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); spapr_machine_2_5_class_options(mc); smc->dr_lmb_enabled = false; compat_props_add(mc->compat_props, hw_compat_2_4, hw_compat_2_4_len); } DEFINE_SPAPR_MACHINE(2_4, "2.4", false); /* * pseries-2.3 */ static void spapr_machine_2_3_class_options(MachineClass *mc) { static GlobalProperty compat[] = { { .driver = "spapr-pci-host-bridge", .property = "dynamic-reconfiguration", .value = "off", }, }; spapr_machine_2_4_class_options(mc); compat_props_add(mc->compat_props, hw_compat_2_3, hw_compat_2_3_len); compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); } DEFINE_SPAPR_MACHINE(2_3, "2.3", false); /* * pseries-2.2 */ static void spapr_machine_2_2_class_options(MachineClass *mc) { static GlobalProperty compat[] = { { .driver = TYPE_SPAPR_PCI_HOST_BRIDGE, .property = "mem_win_size", .value = "0x20000000", }, }; spapr_machine_2_3_class_options(mc); compat_props_add(mc->compat_props, hw_compat_2_2, hw_compat_2_2_len); compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); mc->default_machine_opts = "modern-hotplug-events=off,suppress-vmdesc=on"; } DEFINE_SPAPR_MACHINE(2_2, "2.2", false); /* * pseries-2.1 */ static void spapr_machine_2_1_class_options(MachineClass *mc) { spapr_machine_2_2_class_options(mc); compat_props_add(mc->compat_props, hw_compat_2_1, hw_compat_2_1_len); } DEFINE_SPAPR_MACHINE(2_1, "2.1", false); static void spapr_machine_register_types(void) { type_register_static(&spapr_machine_info); } type_init(spapr_machine_register_types)