diff options
Diffstat (limited to 'hw/i386/pc.c')
| -rw-r--r-- | hw/i386/pc.c | 252 |
1 files changed, 239 insertions, 13 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 3e0ecf140d..67eb45089e 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -58,6 +58,9 @@ #include "hw/boards.h" #include "hw/pci/pci_host.h" #include "acpi-build.h" +#include "hw/mem/pc-dimm.h" +#include "trace.h" +#include "qapi/visitor.h" /* debug PC/ISA interrupts */ //#define DEBUG_IRQ @@ -701,14 +704,14 @@ static FWCfgState *bochs_bios_init(void) unsigned int apic_id = x86_cpu_apic_id_from_index(i); assert(apic_id < apic_id_limit); for (j = 0; j < nb_numa_nodes; j++) { - if (test_bit(i, node_cpumask[j])) { + if (test_bit(i, numa_info[j].node_cpu)) { numa_fw_cfg[apic_id + 1] = cpu_to_le64(j); break; } } } for (i = 0; i < nb_numa_nodes; i++) { - numa_fw_cfg[apic_id_limit + 1 + i] = cpu_to_le64(node_mem[i]); + numa_fw_cfg[apic_id_limit + 1 + i] = cpu_to_le64(numa_info[i].node_mem); } fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA, numa_fw_cfg, (1 + apic_id_limit + nb_numa_nodes) * @@ -1119,8 +1122,12 @@ PcGuestInfo *pc_guest_info_init(ram_addr_t below_4g_mem_size, guest_info->apic_id_limit = pc_apic_id_limit(max_cpus); guest_info->apic_xrupt_override = kvm_allows_irq0_override(); guest_info->numa_nodes = nb_numa_nodes; - guest_info->node_mem = g_memdup(node_mem, guest_info->numa_nodes * + guest_info->node_mem = g_malloc0(guest_info->numa_nodes * sizeof *guest_info->node_mem); + for (i = 0; i < nb_numa_nodes; i++) { + guest_info->node_mem[i] = numa_info[i].node_mem; + } + guest_info->node_cpu = g_malloc0(guest_info->apic_id_limit * sizeof *guest_info->node_cpu); @@ -1128,7 +1135,7 @@ PcGuestInfo *pc_guest_info_init(ram_addr_t below_4g_mem_size, unsigned int apic_id = x86_cpu_apic_id_from_index(i); assert(apic_id < guest_info->apic_id_limit); for (j = 0; j < nb_numa_nodes; j++) { - if (test_bit(i, node_cpumask[j])) { + if (test_bit(i, numa_info[j].node_cpu)) { guest_info->node_cpu[apic_id] = j; break; } @@ -1183,10 +1190,8 @@ void pc_acpi_init(const char *default_dsdt) } } -FWCfgState *pc_memory_init(MemoryRegion *system_memory, - const char *kernel_filename, - const char *kernel_cmdline, - const char *initrd_filename, +FWCfgState *pc_memory_init(MachineState *machine, + MemoryRegion *system_memory, ram_addr_t below_4g_mem_size, ram_addr_t above_4g_mem_size, MemoryRegion *rom_memory, @@ -1197,17 +1202,19 @@ FWCfgState *pc_memory_init(MemoryRegion *system_memory, MemoryRegion *ram, *option_rom_mr; MemoryRegion *ram_below_4g, *ram_above_4g; FWCfgState *fw_cfg; + PCMachineState *pcms = PC_MACHINE(machine); - linux_boot = (kernel_filename != NULL); + assert(machine->ram_size == below_4g_mem_size + above_4g_mem_size); + + linux_boot = (machine->kernel_filename != NULL); /* Allocate RAM. We allocate it as a single memory region and use * aliases to address portions of it, mostly for backwards compatibility * with older qemus that used qemu_ram_alloc(). */ ram = g_malloc(sizeof(*ram)); - memory_region_init_ram(ram, NULL, "pc.ram", - below_4g_mem_size + above_4g_mem_size); - vmstate_register_ram_global(ram); + memory_region_allocate_system_memory(ram, NULL, "pc.ram", + machine->ram_size); *ram_memory = ram; ram_below_4g = g_malloc(sizeof(*ram_below_4g)); memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", ram, @@ -1223,6 +1230,43 @@ FWCfgState *pc_memory_init(MemoryRegion *system_memory, e820_add_entry(0x100000000ULL, above_4g_mem_size, E820_RAM); } + if (!guest_info->has_reserved_memory && + (machine->ram_slots || + (machine->maxram_size > machine->ram_size))) { + MachineClass *mc = MACHINE_GET_CLASS(machine); + + error_report("\"-memory 'slots|maxmem'\" is not supported by: %s", + mc->name); + exit(EXIT_FAILURE); + } + + /* initialize hotplug memory address space */ + if (guest_info->has_reserved_memory && + (machine->ram_size < machine->maxram_size)) { + ram_addr_t hotplug_mem_size = + machine->maxram_size - machine->ram_size; + + if (machine->ram_slots > ACPI_MAX_RAM_SLOTS) { + error_report("unsupported amount of memory slots: %"PRIu64, + machine->ram_slots); + exit(EXIT_FAILURE); + } + + pcms->hotplug_memory_base = + ROUND_UP(0x100000000ULL + above_4g_mem_size, 1ULL << 30); + + if ((pcms->hotplug_memory_base + hotplug_mem_size) < + hotplug_mem_size) { + error_report("unsupported amount of maximum memory: " RAM_ADDR_FMT, + machine->maxram_size); + exit(EXIT_FAILURE); + } + + memory_region_init(&pcms->hotplug_memory, OBJECT(pcms), + "hotplug-memory", hotplug_mem_size); + memory_region_add_subregion(system_memory, pcms->hotplug_memory_base, + &pcms->hotplug_memory); + } /* Initialize PC system firmware */ pc_system_firmware_init(rom_memory, guest_info->isapc_ram_fw); @@ -1238,8 +1282,15 @@ FWCfgState *pc_memory_init(MemoryRegion *system_memory, fw_cfg = bochs_bios_init(); rom_set_fw(fw_cfg); + if (guest_info->has_reserved_memory && pcms->hotplug_memory_base) { + uint64_t *val = g_malloc(sizeof(*val)); + *val = cpu_to_le64(ROUND_UP(pcms->hotplug_memory_base, 0x1ULL << 30)); + fw_cfg_add_file(fw_cfg, "etc/reserved-memory-end", val, sizeof(*val)); + } + if (linux_boot) { - load_linux(fw_cfg, kernel_filename, initrd_filename, kernel_cmdline, below_4g_mem_size); + load_linux(fw_cfg, machine->kernel_filename, machine->initrd_filename, + machine->kernel_cmdline, below_4g_mem_size); } for (i = 0; i < nb_option_roms; i++) { @@ -1455,3 +1506,178 @@ void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name) gsi_state->ioapic_irq[i] = qdev_get_gpio_in(dev, i); } } + +static void pc_generic_machine_class_init(ObjectClass *oc, void *data) +{ + MachineClass *mc = MACHINE_CLASS(oc); + QEMUMachine *qm = data; + + mc->name = qm->name; + mc->alias = qm->alias; + mc->desc = qm->desc; + mc->init = qm->init; + mc->reset = qm->reset; + mc->hot_add_cpu = qm->hot_add_cpu; + mc->kvm_type = qm->kvm_type; + mc->block_default_type = qm->block_default_type; + mc->max_cpus = qm->max_cpus; + mc->no_serial = qm->no_serial; + mc->no_parallel = qm->no_parallel; + mc->use_virtcon = qm->use_virtcon; + mc->use_sclp = qm->use_sclp; + mc->no_floppy = qm->no_floppy; + mc->no_cdrom = qm->no_cdrom; + mc->no_sdcard = qm->no_sdcard; + mc->is_default = qm->is_default; + mc->default_machine_opts = qm->default_machine_opts; + mc->default_boot_order = qm->default_boot_order; + mc->compat_props = qm->compat_props; + mc->hw_version = qm->hw_version; +} + +void qemu_register_pc_machine(QEMUMachine *m) +{ + char *name = g_strconcat(m->name, TYPE_MACHINE_SUFFIX, NULL); + TypeInfo ti = { + .name = name, + .parent = TYPE_PC_MACHINE, + .class_init = pc_generic_machine_class_init, + .class_data = (void *)m, + }; + + type_register(&ti); + g_free(name); +} + +static void pc_dimm_plug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + int slot; + HotplugHandlerClass *hhc; + Error *local_err = NULL; + PCMachineState *pcms = PC_MACHINE(hotplug_dev); + MachineState *machine = MACHINE(hotplug_dev); + PCDIMMDevice *dimm = PC_DIMM(dev); + PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm); + MemoryRegion *mr = ddc->get_memory_region(dimm); + uint64_t addr = object_property_get_int(OBJECT(dimm), PC_DIMM_ADDR_PROP, + &local_err); + if (local_err) { + goto out; + } + + addr = pc_dimm_get_free_addr(pcms->hotplug_memory_base, + memory_region_size(&pcms->hotplug_memory), + !addr ? NULL : &addr, + memory_region_size(mr), &local_err); + if (local_err) { + goto out; + } + + object_property_set_int(OBJECT(dev), addr, PC_DIMM_ADDR_PROP, &local_err); + if (local_err) { + goto out; + } + trace_mhp_pc_dimm_assigned_address(addr); + + slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, &local_err); + if (local_err) { + goto out; + } + + slot = pc_dimm_get_free_slot(slot == PC_DIMM_UNASSIGNED_SLOT ? NULL : &slot, + machine->ram_slots, &local_err); + if (local_err) { + goto out; + } + object_property_set_int(OBJECT(dev), slot, PC_DIMM_SLOT_PROP, &local_err); + if (local_err) { + goto out; + } + trace_mhp_pc_dimm_assigned_slot(slot); + + if (!pcms->acpi_dev) { + error_setg(&local_err, + "memory hotplug is not enabled: missing acpi device"); + goto out; + } + + memory_region_add_subregion(&pcms->hotplug_memory, + addr - pcms->hotplug_memory_base, mr); + vmstate_register_ram(mr, dev); + + hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); + hhc->plug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); +out: + error_propagate(errp, local_err); +} + +static void pc_machine_device_plug_cb(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { + pc_dimm_plug(hotplug_dev, dev, errp); + } +} + +static HotplugHandler *pc_get_hotpug_handler(MachineState *machine, + DeviceState *dev) +{ + PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(machine); + + if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { + return HOTPLUG_HANDLER(machine); + } + + return pcmc->get_hotplug_handler ? + pcmc->get_hotplug_handler(machine, dev) : NULL; +} + +static void +pc_machine_get_hotplug_memory_region_size(Object *obj, Visitor *v, void *opaque, + const char *name, Error **errp) +{ + PCMachineState *pcms = PC_MACHINE(obj); + int64_t value = memory_region_size(&pcms->hotplug_memory); + + visit_type_int(v, &value, name, errp); +} + +static void pc_machine_initfn(Object *obj) +{ + object_property_add(obj, PC_MACHINE_MEMHP_REGION_SIZE, "int", + pc_machine_get_hotplug_memory_region_size, + NULL, NULL, NULL, NULL); +} + +static void pc_machine_class_init(ObjectClass *oc, void *data) +{ + MachineClass *mc = MACHINE_CLASS(oc); + PCMachineClass *pcmc = PC_MACHINE_CLASS(oc); + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); + + pcmc->get_hotplug_handler = mc->get_hotplug_handler; + mc->get_hotplug_handler = pc_get_hotpug_handler; + hc->plug = pc_machine_device_plug_cb; +} + +static const TypeInfo pc_machine_info = { + .name = TYPE_PC_MACHINE, + .parent = TYPE_MACHINE, + .abstract = true, + .instance_size = sizeof(PCMachineState), + .instance_init = pc_machine_initfn, + .class_size = sizeof(PCMachineClass), + .class_init = pc_machine_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_HOTPLUG_HANDLER }, + { } + }, +}; + +static void pc_machine_register_types(void) +{ + type_register_static(&pc_machine_info); +} + +type_init(pc_machine_register_types) |