acpi: cpuhp: add CPU devices AML with _STA method
it adds CPU objects to DSDT with _STA method and QEMU side of CPU hotplug interface initialization with registers sufficient to handle _STA requests, including necessary hotplug callbacks in piix4,ich9 code. Hot-(un)plug hw/acpi parts will be added by corresponding follow up patches. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
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16bcab97eb
commit
5e1b5d9388
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@ -2,6 +2,7 @@ common-obj-$(CONFIG_ACPI_X86) += core.o piix4.o pcihp.o
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common-obj-$(CONFIG_ACPI_X86_ICH) += ich9.o tco.o
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common-obj-$(CONFIG_ACPI_X86_ICH) += ich9.o tco.o
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common-obj-$(CONFIG_ACPI_CPU_HOTPLUG) += cpu_hotplug.o
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common-obj-$(CONFIG_ACPI_CPU_HOTPLUG) += cpu_hotplug.o
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common-obj-$(CONFIG_ACPI_MEMORY_HOTPLUG) += memory_hotplug.o memory_hotplug_acpi_table.o
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common-obj-$(CONFIG_ACPI_MEMORY_HOTPLUG) += memory_hotplug.o memory_hotplug_acpi_table.o
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common-obj-$(CONFIG_ACPI_CPU_HOTPLUG) += cpu.o
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obj-$(CONFIG_ACPI_NVDIMM) += nvdimm.o
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obj-$(CONFIG_ACPI_NVDIMM) += nvdimm.o
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common-obj-$(CONFIG_ACPI) += acpi_interface.o
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common-obj-$(CONFIG_ACPI) += acpi_interface.o
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common-obj-$(CONFIG_ACPI) += bios-linker-loader.o
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common-obj-$(CONFIG_ACPI) += bios-linker-loader.o
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240
hw/acpi/cpu.c
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240
hw/acpi/cpu.c
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@ -0,0 +1,240 @@
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#include "qemu/osdep.h"
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#include "hw/boards.h"
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#include "hw/acpi/cpu.h"
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#include "qapi/error.h"
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#include "trace.h"
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#define ACPI_CPU_HOTPLUG_REG_LEN 12
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#define ACPI_CPU_SELECTOR_OFFSET_WR 0
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#define ACPI_CPU_FLAGS_OFFSET_RW 4
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static uint64_t cpu_hotplug_rd(void *opaque, hwaddr addr, unsigned size)
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{
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uint64_t val = 0;
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CPUHotplugState *cpu_st = opaque;
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AcpiCpuStatus *cdev;
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if (cpu_st->selector >= cpu_st->dev_count) {
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return val;
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}
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cdev = &cpu_st->devs[cpu_st->selector];
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switch (addr) {
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case ACPI_CPU_FLAGS_OFFSET_RW: /* pack and return is_* fields */
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val |= cdev->cpu ? 1 : 0;
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trace_cpuhp_acpi_read_flags(cpu_st->selector, val);
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break;
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default:
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break;
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}
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return val;
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}
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static void cpu_hotplug_wr(void *opaque, hwaddr addr, uint64_t data,
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unsigned int size)
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{
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CPUHotplugState *cpu_st = opaque;
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assert(cpu_st->dev_count);
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if (addr) {
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if (cpu_st->selector >= cpu_st->dev_count) {
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trace_cpuhp_acpi_invalid_idx_selected(cpu_st->selector);
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return;
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}
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}
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switch (addr) {
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case ACPI_CPU_SELECTOR_OFFSET_WR: /* current CPU selector */
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cpu_st->selector = data;
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trace_cpuhp_acpi_write_idx(cpu_st->selector);
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break;
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default:
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break;
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}
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}
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static const MemoryRegionOps cpu_hotplug_ops = {
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.read = cpu_hotplug_rd,
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.write = cpu_hotplug_wr,
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.endianness = DEVICE_LITTLE_ENDIAN,
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.valid = {
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.min_access_size = 1,
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.max_access_size = 4,
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},
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};
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void cpu_hotplug_hw_init(MemoryRegion *as, Object *owner,
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CPUHotplugState *state, hwaddr base_addr)
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{
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MachineState *machine = MACHINE(qdev_get_machine());
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MachineClass *mc = MACHINE_GET_CLASS(machine);
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CPUArchIdList *id_list;
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int i;
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assert(mc->possible_cpu_arch_ids);
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id_list = mc->possible_cpu_arch_ids(machine);
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state->dev_count = id_list->len;
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state->devs = g_new0(typeof(*state->devs), state->dev_count);
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for (i = 0; i < id_list->len; i++) {
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state->devs[i].cpu = id_list->cpus[i].cpu;
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state->devs[i].arch_id = id_list->cpus[i].arch_id;
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}
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g_free(id_list);
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memory_region_init_io(&state->ctrl_reg, owner, &cpu_hotplug_ops, state,
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"acpi-mem-hotplug", ACPI_CPU_HOTPLUG_REG_LEN);
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memory_region_add_subregion(as, base_addr, &state->ctrl_reg);
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}
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static AcpiCpuStatus *get_cpu_status(CPUHotplugState *cpu_st, DeviceState *dev)
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{
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CPUClass *k = CPU_GET_CLASS(dev);
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uint64_t cpu_arch_id = k->get_arch_id(CPU(dev));
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int i;
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for (i = 0; i < cpu_st->dev_count; i++) {
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if (cpu_arch_id == cpu_st->devs[i].arch_id) {
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return &cpu_st->devs[i];
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}
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}
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return NULL;
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}
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void acpi_cpu_plug_cb(HotplugHandler *hotplug_dev,
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CPUHotplugState *cpu_st, DeviceState *dev, Error **errp)
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{
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AcpiCpuStatus *cdev;
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cdev = get_cpu_status(cpu_st, dev);
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if (!cdev) {
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return;
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}
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cdev->cpu = CPU(dev);
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}
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const VMStateDescription vmstate_cpu_hotplug = {
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.name = "CPU hotplug state",
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.version_id = 1,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.fields = (VMStateField[]) {
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VMSTATE_UINT32(selector, CPUHotplugState),
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VMSTATE_END_OF_LIST()
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}
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};
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#define CPU_NAME_FMT "C%.03X"
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#define CPUHP_RES_DEVICE "PRES"
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#define CPU_LOCK "CPLK"
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#define CPU_STS_METHOD "CSTA"
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#define CPU_ENABLED "CPEN"
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#define CPU_SELECTOR "CSEL"
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void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts,
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hwaddr io_base,
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const char *res_root)
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{
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Aml *ifctx;
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Aml *field;
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Aml *method;
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Aml *cpu_ctrl_dev;
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Aml *cpus_dev;
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Aml *zero = aml_int(0);
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Aml *one = aml_int(1);
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Aml *sb_scope = aml_scope("_SB");
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MachineClass *mc = MACHINE_GET_CLASS(machine);
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CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(machine);
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char *cphp_res_path = g_strdup_printf("%s." CPUHP_RES_DEVICE, res_root);
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cpu_ctrl_dev = aml_device("%s", cphp_res_path);
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{
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Aml *crs;
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aml_append(cpu_ctrl_dev,
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aml_name_decl("_HID", aml_eisaid("PNP0A06")));
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aml_append(cpu_ctrl_dev,
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aml_name_decl("_UID", aml_string("CPU Hotplug resources")));
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aml_append(cpu_ctrl_dev, aml_mutex(CPU_LOCK, 0));
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crs = aml_resource_template();
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aml_append(crs, aml_io(AML_DECODE16, io_base, io_base, 1,
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ACPI_CPU_HOTPLUG_REG_LEN));
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aml_append(cpu_ctrl_dev, aml_name_decl("_CRS", crs));
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/* declare CPU hotplug MMIO region with related access fields */
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aml_append(cpu_ctrl_dev,
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aml_operation_region("PRST", AML_SYSTEM_IO, aml_int(io_base),
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ACPI_CPU_HOTPLUG_REG_LEN));
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field = aml_field("PRST", AML_BYTE_ACC, AML_NOLOCK,
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AML_WRITE_AS_ZEROS);
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aml_append(field, aml_reserved_field(ACPI_CPU_FLAGS_OFFSET_RW * 8));
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/* 1 if enabled, read only */
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aml_append(field, aml_named_field(CPU_ENABLED, 1));
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aml_append(cpu_ctrl_dev, field);
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field = aml_field("PRST", AML_DWORD_ACC, AML_NOLOCK, AML_PRESERVE);
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/* CPU selector, write only */
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aml_append(field, aml_named_field(CPU_SELECTOR, 32));
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aml_append(cpu_ctrl_dev, field);
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}
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aml_append(sb_scope, cpu_ctrl_dev);
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cpus_dev = aml_device("\\_SB.CPUS");
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{
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int i;
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Aml *ctrl_lock = aml_name("%s.%s", cphp_res_path, CPU_LOCK);
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Aml *cpu_selector = aml_name("%s.%s", cphp_res_path, CPU_SELECTOR);
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Aml *is_enabled = aml_name("%s.%s", cphp_res_path, CPU_ENABLED);
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aml_append(cpus_dev, aml_name_decl("_HID", aml_string("ACPI0010")));
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aml_append(cpus_dev, aml_name_decl("_CID", aml_eisaid("PNP0A05")));
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method = aml_method(CPU_STS_METHOD, 1, AML_SERIALIZED);
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{
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Aml *idx = aml_arg(0);
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Aml *sta = aml_local(0);
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aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
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aml_append(method, aml_store(idx, cpu_selector));
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aml_append(method, aml_store(zero, sta));
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ifctx = aml_if(aml_equal(is_enabled, one));
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{
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aml_append(ifctx, aml_store(aml_int(0xF), sta));
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}
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aml_append(method, ifctx);
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aml_append(method, aml_release(ctrl_lock));
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aml_append(method, aml_return(sta));
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}
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aml_append(cpus_dev, method);
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/* build Processor object for each processor */
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for (i = 0; i < arch_ids->len; i++) {
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Aml *dev;
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Aml *uid = aml_int(i);
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int arch_id = arch_ids->cpus[i].arch_id;
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if (opts.apci_1_compatible && arch_id < 255) {
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dev = aml_processor(i, 0, 0, CPU_NAME_FMT, i);
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} else {
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dev = aml_device(CPU_NAME_FMT, i);
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aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007")));
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aml_append(dev, aml_name_decl("_UID", uid));
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}
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method = aml_method("_STA", 0, AML_SERIALIZED);
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aml_append(method, aml_return(aml_call1(CPU_STS_METHOD, uid)));
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aml_append(dev, method);
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aml_append(cpus_dev, dev);
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}
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}
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aml_append(sb_scope, cpus_dev);
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aml_append(table, sb_scope);
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g_free(cphp_res_path);
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g_free(arch_ids);
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}
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@ -459,9 +459,12 @@ void ich9_pm_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
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object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
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object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
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acpi_memory_plug_cb(hotplug_dev, &lpc->pm.acpi_memory_hotplug,
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acpi_memory_plug_cb(hotplug_dev, &lpc->pm.acpi_memory_hotplug,
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dev, errp);
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dev, errp);
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} else if (lpc->pm.cpu_hotplug_legacy &&
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} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
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object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
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if (lpc->pm.cpu_hotplug_legacy) {
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legacy_acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.gpe_cpu, dev, errp);
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legacy_acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.gpe_cpu, dev, errp);
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} else {
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acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.cpuhp_state, dev, errp);
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}
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} else {
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} else {
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error_setg(errp, "acpi: device plug request for not supported device"
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error_setg(errp, "acpi: device plug request for not supported device"
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" type: %s", object_get_typename(OBJECT(dev)));
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" type: %s", object_get_typename(OBJECT(dev)));
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@ -34,6 +34,7 @@
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#include "hw/acpi/piix4.h"
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#include "hw/acpi/piix4.h"
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#include "hw/acpi/pcihp.h"
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#include "hw/acpi/pcihp.h"
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#include "hw/acpi/cpu_hotplug.h"
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#include "hw/acpi/cpu_hotplug.h"
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#include "hw/acpi/cpu.h"
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#include "hw/hotplug.h"
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#include "hw/hotplug.h"
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#include "hw/mem/pc-dimm.h"
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#include "hw/mem/pc-dimm.h"
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#include "hw/acpi/memory_hotplug.h"
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#include "hw/acpi/memory_hotplug.h"
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@ -88,6 +89,7 @@ typedef struct PIIX4PMState {
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bool cpu_hotplug_legacy;
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bool cpu_hotplug_legacy;
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AcpiCpuHotplug gpe_cpu;
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AcpiCpuHotplug gpe_cpu;
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CPUHotplugState cpuhp_state;
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MemHotplugState acpi_memory_hotplug;
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MemHotplugState acpi_memory_hotplug;
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} PIIX4PMState;
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} PIIX4PMState;
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@ -352,9 +354,12 @@ static void piix4_device_plug_cb(HotplugHandler *hotplug_dev,
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acpi_memory_plug_cb(hotplug_dev, &s->acpi_memory_hotplug, dev, errp);
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acpi_memory_plug_cb(hotplug_dev, &s->acpi_memory_hotplug, dev, errp);
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} else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
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} else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
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acpi_pcihp_device_plug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev, errp);
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acpi_pcihp_device_plug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev, errp);
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} else if (s->cpu_hotplug_legacy &&
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} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
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object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
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if (s->cpu_hotplug_legacy) {
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legacy_acpi_cpu_plug_cb(hotplug_dev, &s->gpe_cpu, dev, errp);
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legacy_acpi_cpu_plug_cb(hotplug_dev, &s->gpe_cpu, dev, errp);
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} else {
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acpi_cpu_plug_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
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}
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} else {
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} else {
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error_setg(errp, "acpi: device plug request for not supported device"
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error_setg(errp, "acpi: device plug request for not supported device"
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" type: %s", object_get_typename(OBJECT(dev)));
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" type: %s", object_get_typename(OBJECT(dev)));
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@ -16,3 +16,8 @@ mhp_acpi_clear_insert_evt(uint32_t slot) "slot[0x%"PRIx32"] clear insert event"
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mhp_acpi_clear_remove_evt(uint32_t slot) "slot[0x%"PRIx32"] clear remove event"
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mhp_acpi_clear_remove_evt(uint32_t slot) "slot[0x%"PRIx32"] clear remove event"
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mhp_acpi_pc_dimm_deleted(uint32_t slot) "slot[0x%"PRIx32"] pc-dimm deleted"
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mhp_acpi_pc_dimm_deleted(uint32_t slot) "slot[0x%"PRIx32"] pc-dimm deleted"
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mhp_acpi_pc_dimm_delete_failed(uint32_t slot) "slot[0x%"PRIx32"] pc-dimm delete failed"
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mhp_acpi_pc_dimm_delete_failed(uint32_t slot) "slot[0x%"PRIx32"] pc-dimm delete failed"
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# hw/acpi/cpu.c
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cpuhp_acpi_invalid_idx_selected(uint32_t idx) "0x%"PRIx32
|
||||||
|
cpuhp_acpi_read_flags(uint32_t idx, uint8_t flags) "idx[0x%"PRIx32"] flags: 0x%"PRIx8
|
||||||
|
cpuhp_acpi_write_idx(uint32_t idx) "set active cpu idx: 0x%"PRIx32
|
||||||
|
|
51
include/hw/acpi/cpu.h
Normal file
51
include/hw/acpi/cpu.h
Normal file
|
@ -0,0 +1,51 @@
|
||||||
|
/*
|
||||||
|
* QEMU ACPI hotplug utilities
|
||||||
|
*
|
||||||
|
* Copyright (C) 2016 Red Hat Inc
|
||||||
|
*
|
||||||
|
* Authors:
|
||||||
|
* Igor Mammedov <imammedo@redhat.com>
|
||||||
|
*
|
||||||
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
||||||
|
* See the COPYING file in the top-level directory.
|
||||||
|
*/
|
||||||
|
#ifndef ACPI_CPU_H
|
||||||
|
#define ACPI_CPU_H
|
||||||
|
|
||||||
|
#include "hw/qdev-core.h"
|
||||||
|
#include "hw/acpi/acpi.h"
|
||||||
|
#include "hw/acpi/aml-build.h"
|
||||||
|
#include "hw/hotplug.h"
|
||||||
|
|
||||||
|
typedef struct AcpiCpuStatus {
|
||||||
|
struct CPUState *cpu;
|
||||||
|
uint64_t arch_id;
|
||||||
|
} AcpiCpuStatus;
|
||||||
|
|
||||||
|
typedef struct CPUHotplugState {
|
||||||
|
MemoryRegion ctrl_reg;
|
||||||
|
uint32_t selector;
|
||||||
|
uint32_t dev_count;
|
||||||
|
AcpiCpuStatus *devs;
|
||||||
|
} CPUHotplugState;
|
||||||
|
|
||||||
|
void acpi_cpu_plug_cb(HotplugHandler *hotplug_dev,
|
||||||
|
CPUHotplugState *cpu_st, DeviceState *dev, Error **errp);
|
||||||
|
|
||||||
|
void cpu_hotplug_hw_init(MemoryRegion *as, Object *owner,
|
||||||
|
CPUHotplugState *state, hwaddr base_addr);
|
||||||
|
|
||||||
|
typedef struct CPUHotplugFeatures {
|
||||||
|
bool apci_1_compatible;
|
||||||
|
} CPUHotplugFeatures;
|
||||||
|
|
||||||
|
void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts,
|
||||||
|
hwaddr io_base,
|
||||||
|
const char *res_root);
|
||||||
|
|
||||||
|
extern const VMStateDescription vmstate_cpu_hotplug;
|
||||||
|
#define VMSTATE_CPU_HOTPLUG(cpuhp, state) \
|
||||||
|
VMSTATE_STRUCT(cpuhp, state, 1, \
|
||||||
|
vmstate_cpu_hotplug, CPUHotplugState)
|
||||||
|
|
||||||
|
#endif
|
|
@ -23,6 +23,7 @@
|
||||||
|
|
||||||
#include "hw/acpi/acpi.h"
|
#include "hw/acpi/acpi.h"
|
||||||
#include "hw/acpi/cpu_hotplug.h"
|
#include "hw/acpi/cpu_hotplug.h"
|
||||||
|
#include "hw/acpi/cpu.h"
|
||||||
#include "hw/acpi/memory_hotplug.h"
|
#include "hw/acpi/memory_hotplug.h"
|
||||||
#include "hw/acpi/acpi_dev_interface.h"
|
#include "hw/acpi/acpi_dev_interface.h"
|
||||||
#include "hw/acpi/tco.h"
|
#include "hw/acpi/tco.h"
|
||||||
|
@ -50,6 +51,7 @@ typedef struct ICH9LPCPMRegs {
|
||||||
|
|
||||||
bool cpu_hotplug_legacy;
|
bool cpu_hotplug_legacy;
|
||||||
AcpiCpuHotplug gpe_cpu;
|
AcpiCpuHotplug gpe_cpu;
|
||||||
|
CPUHotplugState cpuhp_state;
|
||||||
|
|
||||||
MemHotplugState acpi_memory_hotplug;
|
MemHotplugState acpi_memory_hotplug;
|
||||||
|
|
||||||
|
|
Loading…
Reference in a new issue