[qemu.git] / hw / acpi / cpu.c

#include "qemu/osdep.h"
#include "hw/boards.h"
#include "hw/acpi/cpu.h"
#include "qapi/error.h"
#include "qapi/qapi-events-misc.h"
#include "trace.h"
#include "sysemu/numa.h"

#define ACPI_CPU_HOTPLUG_REG_LEN 12
#define ACPI_CPU_SELECTOR_OFFSET_WR 0
#define ACPI_CPU_FLAGS_OFFSET_RW 4
#define ACPI_CPU_CMD_OFFSET_WR 5
#define ACPI_CPU_CMD_DATA_OFFSET_RW 8

enum {
    CPHP_GET_NEXT_CPU_WITH_EVENT_CMD = 0,
    CPHP_OST_EVENT_CMD = 1,
    CPHP_OST_STATUS_CMD = 2,
    CPHP_CMD_MAX
};

static ACPIOSTInfo *acpi_cpu_device_status(int idx, AcpiCpuStatus *cdev)
{
    ACPIOSTInfo *info = g_new0(ACPIOSTInfo, 1);

    info->slot_type = ACPI_SLOT_TYPE_CPU;
    info->slot = g_strdup_printf("%d", idx);
    info->source = cdev->ost_event;
    info->status = cdev->ost_status;
    if (cdev->cpu) {
        DeviceState *dev = DEVICE(cdev->cpu);
        if (dev->id) {
            info->device = g_strdup(dev->id);
            info->has_device = true;
        }
    }
    return info;
}

void acpi_cpu_ospm_status(CPUHotplugState *cpu_st, ACPIOSTInfoList ***list)
{
    int i;

    for (i = 0; i < cpu_st->dev_count; i++) {
        ACPIOSTInfoList *elem = g_new0(ACPIOSTInfoList, 1);
        elem->value = acpi_cpu_device_status(i, &cpu_st->devs[i]);
        elem->next = NULL;
        **list = elem;
        *list = &elem->next;
    }
}

static uint64_t cpu_hotplug_rd(void *opaque, hwaddr addr, unsigned size)
{
    uint64_t val = 0;
    CPUHotplugState *cpu_st = opaque;
    AcpiCpuStatus *cdev;

    if (cpu_st->selector >= cpu_st->dev_count) {
        return val;
    }

    cdev = &cpu_st->devs[cpu_st->selector];
    switch (addr) {
    case ACPI_CPU_FLAGS_OFFSET_RW: /* pack and return is_* fields */
        val |= cdev->cpu ? 1 : 0;
        val |= cdev->is_inserting ? 2 : 0;
        val |= cdev->is_removing  ? 4 : 0;
        trace_cpuhp_acpi_read_flags(cpu_st->selector, val);
        break;
    case ACPI_CPU_CMD_DATA_OFFSET_RW:
        switch (cpu_st->command) {
        case CPHP_GET_NEXT_CPU_WITH_EVENT_CMD:
           val = cpu_st->selector;
           break;
        default:
           break;
        }
        trace_cpuhp_acpi_read_cmd_data(cpu_st->selector, val);
        break;
    default:
        break;
    }
    return val;
}

static void cpu_hotplug_wr(void *opaque, hwaddr addr, uint64_t data,
                           unsigned int size)
{
    CPUHotplugState *cpu_st = opaque;
    AcpiCpuStatus *cdev;
    ACPIOSTInfo *info;

    assert(cpu_st->dev_count);

    if (addr) {
        if (cpu_st->selector >= cpu_st->dev_count) {
            trace_cpuhp_acpi_invalid_idx_selected(cpu_st->selector);
            return;
        }
    }

    switch (addr) {
    case ACPI_CPU_SELECTOR_OFFSET_WR: /* current CPU selector */
        cpu_st->selector = data;
        trace_cpuhp_acpi_write_idx(cpu_st->selector);
        break;
    case ACPI_CPU_FLAGS_OFFSET_RW: /* set is_* fields  */
        cdev = &cpu_st->devs[cpu_st->selector];
        if (data & 2) { /* clear insert event */
            cdev->is_inserting = false;
            trace_cpuhp_acpi_clear_inserting_evt(cpu_st->selector);
        } else if (data & 4) { /* clear remove event */
            cdev->is_removing = false;
            trace_cpuhp_acpi_clear_remove_evt(cpu_st->selector);
        } else if (data & 8) {
            DeviceState *dev = NULL;
            HotplugHandler *hotplug_ctrl = NULL;

            if (!cdev->cpu || cdev->cpu == first_cpu) {
                trace_cpuhp_acpi_ejecting_invalid_cpu(cpu_st->selector);
                break;
            }

            trace_cpuhp_acpi_ejecting_cpu(cpu_st->selector);
            dev = DEVICE(cdev->cpu);
            hotplug_ctrl = qdev_get_hotplug_handler(dev);
            hotplug_handler_unplug(hotplug_ctrl, dev, NULL);
            object_unparent(OBJECT(dev));
        }
        break;
    case ACPI_CPU_CMD_OFFSET_WR:
        trace_cpuhp_acpi_write_cmd(cpu_st->selector, data);
        if (data < CPHP_CMD_MAX) {
            cpu_st->command = data;
            if (cpu_st->command == CPHP_GET_NEXT_CPU_WITH_EVENT_CMD) {
                uint32_t iter = cpu_st->selector;

                do {
                    cdev = &cpu_st->devs[iter];
                    if (cdev->is_inserting || cdev->is_removing) {
                        cpu_st->selector = iter;
                        trace_cpuhp_acpi_cpu_has_events(cpu_st->selector,
                            cdev->is_inserting, cdev->is_removing);
                        break;
                    }
                    iter = iter + 1 < cpu_st->dev_count ? iter + 1 : 0;
                } while (iter != cpu_st->selector);
            }
        }
        break;
    case ACPI_CPU_CMD_DATA_OFFSET_RW:
        switch (cpu_st->command) {
        case CPHP_OST_EVENT_CMD: {
           cdev = &cpu_st->devs[cpu_st->selector];
           cdev->ost_event = data;
           trace_cpuhp_acpi_write_ost_ev(cpu_st->selector, cdev->ost_event);
           break;
        }
        case CPHP_OST_STATUS_CMD: {
           cdev = &cpu_st->devs[cpu_st->selector];
           cdev->ost_status = data;
           info = acpi_cpu_device_status(cpu_st->selector, cdev);
           qapi_event_send_acpi_device_ost(info);
           qapi_free_ACPIOSTInfo(info);
           trace_cpuhp_acpi_write_ost_status(cpu_st->selector,
                                             cdev->ost_status);
           break;
        }
        default:
           break;
        }
        break;
    default:
        break;
    }
}

static const MemoryRegionOps cpu_hotplug_ops = {
    .read = cpu_hotplug_rd,
    .write = cpu_hotplug_wr,
    .endianness = DEVICE_LITTLE_ENDIAN,
    .valid = {
        .min_access_size = 1,
        .max_access_size = 4,
    },
};

void cpu_hotplug_hw_init(MemoryRegion *as, Object *owner,
                         CPUHotplugState *state, hwaddr base_addr)
{
    MachineState *machine = MACHINE(qdev_get_machine());
    MachineClass *mc = MACHINE_GET_CLASS(machine);
    const CPUArchIdList *id_list;
    int i;

    assert(mc->possible_cpu_arch_ids);
    id_list = mc->possible_cpu_arch_ids(machine);
    state->dev_count = id_list->len;
    state->devs = g_new0(typeof(*state->devs), state->dev_count);
    for (i = 0; i < id_list->len; i++) {
        state->devs[i].cpu =  CPU(id_list->cpus[i].cpu);
        state->devs[i].arch_id = id_list->cpus[i].arch_id;
    }
    memory_region_init_io(&state->ctrl_reg, owner, &cpu_hotplug_ops, state,
                          "acpi-mem-hotplug", ACPI_CPU_HOTPLUG_REG_LEN);
    memory_region_add_subregion(as, base_addr, &state->ctrl_reg);
}

static AcpiCpuStatus *get_cpu_status(CPUHotplugState *cpu_st, DeviceState *dev)
{
    CPUClass *k = CPU_GET_CLASS(dev);
    uint64_t cpu_arch_id = k->get_arch_id(CPU(dev));
    int i;

    for (i = 0; i < cpu_st->dev_count; i++) {
        if (cpu_arch_id == cpu_st->devs[i].arch_id) {
            return &cpu_st->devs[i];
        }
    }
    return NULL;
}

void acpi_cpu_plug_cb(HotplugHandler *hotplug_dev,
                      CPUHotplugState *cpu_st, DeviceState *dev, Error **errp)
{
    AcpiCpuStatus *cdev;

    cdev = get_cpu_status(cpu_st, dev);
    if (!cdev) {
        return;
    }

    cdev->cpu = CPU(dev);
    if (dev->hotplugged) {
        cdev->is_inserting = true;
        acpi_send_event(DEVICE(hotplug_dev), ACPI_CPU_HOTPLUG_STATUS);
    }
}

void acpi_cpu_unplug_request_cb(HotplugHandler *hotplug_dev,
                                CPUHotplugState *cpu_st,
                                DeviceState *dev, Error **errp)
{
    AcpiCpuStatus *cdev;

    cdev = get_cpu_status(cpu_st, dev);
    if (!cdev) {
        return;
    }

    cdev->is_removing = true;
    acpi_send_event(DEVICE(hotplug_dev), ACPI_CPU_HOTPLUG_STATUS);
}

void acpi_cpu_unplug_cb(CPUHotplugState *cpu_st,
                        DeviceState *dev, Error **errp)
{
    AcpiCpuStatus *cdev;

    cdev = get_cpu_status(cpu_st, dev);
    if (!cdev) {
        return;
    }

    cdev->cpu = NULL;
}

static const VMStateDescription vmstate_cpuhp_sts = {
    .name = "CPU hotplug device state",
    .version_id = 1,
    .minimum_version_id = 1,
    .minimum_version_id_old = 1,
    .fields      = (VMStateField[]) {
        VMSTATE_BOOL(is_inserting, AcpiCpuStatus),
        VMSTATE_BOOL(is_removing, AcpiCpuStatus),
        VMSTATE_UINT32(ost_event, AcpiCpuStatus),
        VMSTATE_UINT32(ost_status, AcpiCpuStatus),
        VMSTATE_END_OF_LIST()
    }
};

const VMStateDescription vmstate_cpu_hotplug = {
    .name = "CPU hotplug state",
    .version_id = 1,
    .minimum_version_id = 1,
    .minimum_version_id_old = 1,
    .fields      = (VMStateField[]) {
        VMSTATE_UINT32(selector, CPUHotplugState),
        VMSTATE_UINT8(command, CPUHotplugState),
        VMSTATE_STRUCT_VARRAY_POINTER_UINT32(devs, CPUHotplugState, dev_count,
                                             vmstate_cpuhp_sts, AcpiCpuStatus),
        VMSTATE_END_OF_LIST()
    }
};

#define CPU_NAME_FMT      "C%.03X"
#define CPUHP_RES_DEVICE  "PRES"
#define CPU_LOCK          "CPLK"
#define CPU_STS_METHOD    "CSTA"
#define CPU_SCAN_METHOD   "CSCN"
#define CPU_NOTIFY_METHOD "CTFY"
#define CPU_EJECT_METHOD  "CEJ0"
#define CPU_OST_METHOD    "COST"

#define CPU_ENABLED       "CPEN"
#define CPU_SELECTOR      "CSEL"
#define CPU_COMMAND       "CCMD"
#define CPU_DATA          "CDAT"
#define CPU_INSERT_EVENT  "CINS"
#define CPU_REMOVE_EVENT  "CRMV"
#define CPU_EJECT_EVENT   "CEJ0"

void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts,
                    hwaddr io_base,
                    const char *res_root,
                    const char *event_handler_method)
{
    Aml *ifctx;
    Aml *field;
    Aml *method;
    Aml *cpu_ctrl_dev;
    Aml *cpus_dev;
    Aml *zero = aml_int(0);
    Aml *one = aml_int(1);
    Aml *sb_scope = aml_scope("_SB");
    MachineClass *mc = MACHINE_GET_CLASS(machine);
    const CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(machine);
    char *cphp_res_path = g_strdup_printf("%s." CPUHP_RES_DEVICE, res_root);
    Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, NULL);
    AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj);
    AcpiDeviceIf *adev = ACPI_DEVICE_IF(obj);

    cpu_ctrl_dev = aml_device("%s", cphp_res_path);
    {
        Aml *crs;

        aml_append(cpu_ctrl_dev,
            aml_name_decl("_HID", aml_eisaid("PNP0A06")));
        aml_append(cpu_ctrl_dev,
            aml_name_decl("_UID", aml_string("CPU Hotplug resources")));
        aml_append(cpu_ctrl_dev, aml_mutex(CPU_LOCK, 0));

        crs = aml_resource_template();
        aml_append(crs, aml_io(AML_DECODE16, io_base, io_base, 1,
                               ACPI_CPU_HOTPLUG_REG_LEN));
        aml_append(cpu_ctrl_dev, aml_name_decl("_CRS", crs));

        /* declare CPU hotplug MMIO region with related access fields */
        aml_append(cpu_ctrl_dev,
            aml_operation_region("PRST", AML_SYSTEM_IO, aml_int(io_base),
                                 ACPI_CPU_HOTPLUG_REG_LEN));

        field = aml_field("PRST", AML_BYTE_ACC, AML_NOLOCK,
                          AML_WRITE_AS_ZEROS);
        aml_append(field, aml_reserved_field(ACPI_CPU_FLAGS_OFFSET_RW * 8));
        /* 1 if enabled, read only */
        aml_append(field, aml_named_field(CPU_ENABLED, 1));
        /* (read) 1 if has a insert event. (write) 1 to clear event */
        aml_append(field, aml_named_field(CPU_INSERT_EVENT, 1));
        /* (read) 1 if has a remove event. (write) 1 to clear event */
        aml_append(field, aml_named_field(CPU_REMOVE_EVENT, 1));
        /* initiates device eject, write only */
        aml_append(field, aml_named_field(CPU_EJECT_EVENT, 1));
        aml_append(field, aml_reserved_field(4));
        aml_append(field, aml_named_field(CPU_COMMAND, 8));
        aml_append(cpu_ctrl_dev, field);

        field = aml_field("PRST", AML_DWORD_ACC, AML_NOLOCK, AML_PRESERVE);
        /* CPU selector, write only */
        aml_append(field, aml_named_field(CPU_SELECTOR, 32));
        /* flags + cmd + 2byte align */
        aml_append(field, aml_reserved_field(4 * 8));
        aml_append(field, aml_named_field(CPU_DATA, 32));
        aml_append(cpu_ctrl_dev, field);

        if (opts.has_legacy_cphp) {
            method = aml_method("_INI", 0, AML_SERIALIZED);
            /* switch off legacy CPU hotplug HW and use new one,
             * on reboot system is in new mode and writing 0
             * in CPU_SELECTOR selects BSP, which is NOP at
             * the time _INI is called */
            aml_append(method, aml_store(zero, aml_name(CPU_SELECTOR)));
            aml_append(cpu_ctrl_dev, method);
        }
    }
    aml_append(sb_scope, cpu_ctrl_dev);

    cpus_dev = aml_device("\\_SB.CPUS");
    {
        int i;
        Aml *ctrl_lock = aml_name("%s.%s", cphp_res_path, CPU_LOCK);
        Aml *cpu_selector = aml_name("%s.%s", cphp_res_path, CPU_SELECTOR);
        Aml *is_enabled = aml_name("%s.%s", cphp_res_path, CPU_ENABLED);
        Aml *cpu_cmd = aml_name("%s.%s", cphp_res_path, CPU_COMMAND);
        Aml *cpu_data = aml_name("%s.%s", cphp_res_path, CPU_DATA);
        Aml *ins_evt = aml_name("%s.%s", cphp_res_path, CPU_INSERT_EVENT);
        Aml *rm_evt = aml_name("%s.%s", cphp_res_path, CPU_REMOVE_EVENT);
        Aml *ej_evt = aml_name("%s.%s", cphp_res_path, CPU_EJECT_EVENT);

        aml_append(cpus_dev, aml_name_decl("_HID", aml_string("ACPI0010")));
        aml_append(cpus_dev, aml_name_decl("_CID", aml_eisaid("PNP0A05")));

        method = aml_method(CPU_NOTIFY_METHOD, 2, AML_NOTSERIALIZED);
        for (i = 0; i < arch_ids->len; i++) {
            Aml *cpu = aml_name(CPU_NAME_FMT, i);
            Aml *uid = aml_arg(0);
            Aml *event = aml_arg(1);

            ifctx = aml_if(aml_equal(uid, aml_int(i)));
            {
                aml_append(ifctx, aml_notify(cpu, event));
            }
            aml_append(method, ifctx);
        }
        aml_append(cpus_dev, method);

        method = aml_method(CPU_STS_METHOD, 1, AML_SERIALIZED);
        {
            Aml *idx = aml_arg(0);
            Aml *sta = aml_local(0);

            aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
            aml_append(method, aml_store(idx, cpu_selector));
            aml_append(method, aml_store(zero, sta));
            ifctx = aml_if(aml_equal(is_enabled, one));
            {
                aml_append(ifctx, aml_store(aml_int(0xF), sta));
            }
            aml_append(method, ifctx);
            aml_append(method, aml_release(ctrl_lock));
            aml_append(method, aml_return(sta));
        }
        aml_append(cpus_dev, method);

        method = aml_method(CPU_EJECT_METHOD, 1, AML_SERIALIZED);
        {
            Aml *idx = aml_arg(0);

            aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
            aml_append(method, aml_store(idx, cpu_selector));
            aml_append(method, aml_store(one, ej_evt));
            aml_append(method, aml_release(ctrl_lock));
        }
        aml_append(cpus_dev, method);

        method = aml_method(CPU_SCAN_METHOD, 0, AML_SERIALIZED);
        {
            Aml *else_ctx;
            Aml *while_ctx;
            Aml *has_event = aml_local(0);
            Aml *dev_chk = aml_int(1);
            Aml *eject_req = aml_int(3);
            Aml *next_cpu_cmd = aml_int(CPHP_GET_NEXT_CPU_WITH_EVENT_CMD);

            aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
            aml_append(method, aml_store(one, has_event));
            while_ctx = aml_while(aml_equal(has_event, one));
            {
                 /* clear loop exit condition, ins_evt/rm_evt checks
                  * will set it to 1 while next_cpu_cmd returns a CPU
                  * with events */
                 aml_append(while_ctx, aml_store(zero, has_event));
                 aml_append(while_ctx, aml_store(next_cpu_cmd, cpu_cmd));
                 ifctx = aml_if(aml_equal(ins_evt, one));
                 {
                     aml_append(ifctx,
                         aml_call2(CPU_NOTIFY_METHOD, cpu_data, dev_chk));
                     aml_append(ifctx, aml_store(one, ins_evt));
                     aml_append(ifctx, aml_store(one, has_event));
                 }
                 aml_append(while_ctx, ifctx);
                 else_ctx = aml_else();
                 ifctx = aml_if(aml_equal(rm_evt, one));
                 {
                     aml_append(ifctx,
                         aml_call2(CPU_NOTIFY_METHOD, cpu_data, eject_req));
                     aml_append(ifctx, aml_store(one, rm_evt));
                     aml_append(ifctx, aml_store(one, has_event));
                 }
                 aml_append(else_ctx, ifctx);
                 aml_append(while_ctx, else_ctx);
            }
            aml_append(method, while_ctx);
            aml_append(method, aml_release(ctrl_lock));
        }
        aml_append(cpus_dev, method);

        method = aml_method(CPU_OST_METHOD, 4, AML_SERIALIZED);
        {
            Aml *uid = aml_arg(0);
            Aml *ev_cmd = aml_int(CPHP_OST_EVENT_CMD);
            Aml *st_cmd = aml_int(CPHP_OST_STATUS_CMD);

            aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
            aml_append(method, aml_store(uid, cpu_selector));
            aml_append(method, aml_store(ev_cmd, cpu_cmd));
            aml_append(method, aml_store(aml_arg(1), cpu_data));
            aml_append(method, aml_store(st_cmd, cpu_cmd));
            aml_append(method, aml_store(aml_arg(2), cpu_data));
            aml_append(method, aml_release(ctrl_lock));
        }
        aml_append(cpus_dev, method);

        /* build Processor object for each processor */
        for (i = 0; i < arch_ids->len; i++) {
            Aml *dev;
            Aml *uid = aml_int(i);
            GArray *madt_buf = g_array_new(0, 1, 1);
            int arch_id = arch_ids->cpus[i].arch_id;

            if (opts.acpi_1_compatible && arch_id < 255) {
                dev = aml_processor(i, 0, 0, CPU_NAME_FMT, i);
            } else {
                dev = aml_device(CPU_NAME_FMT, i);
                aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007")));
                aml_append(dev, aml_name_decl("_UID", uid));
            }

            method = aml_method("_STA", 0, AML_SERIALIZED);
            aml_append(method, aml_return(aml_call1(CPU_STS_METHOD, uid)));
            aml_append(dev, method);

            /* build _MAT object */
            assert(adevc && adevc->madt_cpu);
            adevc->madt_cpu(adev, i, arch_ids, madt_buf);
            switch (madt_buf->data[0]) {
            case ACPI_APIC_PROCESSOR: {
                AcpiMadtProcessorApic *apic = (void *)madt_buf->data;
                apic->flags = cpu_to_le32(1);
                break;
            }
            case ACPI_APIC_LOCAL_X2APIC: {
                AcpiMadtProcessorX2Apic *apic = (void *)madt_buf->data;
                apic->flags = cpu_to_le32(1);
                break;
            }
            default:
                assert(0);
            }
            aml_append(dev, aml_name_decl("_MAT",
                aml_buffer(madt_buf->len, (uint8_t *)madt_buf->data)));
            g_array_free(madt_buf, true);

            if (CPU(arch_ids->cpus[i].cpu) != first_cpu) {
                method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
                aml_append(method, aml_call1(CPU_EJECT_METHOD, uid));
                aml_append(dev, method);
            }

            method = aml_method("_OST", 3, AML_SERIALIZED);
            aml_append(method,
                aml_call4(CPU_OST_METHOD, uid, aml_arg(0),
                          aml_arg(1), aml_arg(2))
            );
            aml_append(dev, method);

            /* Linux guests discard SRAT info for non-present CPUs
             * as a result _PXM is required for all CPUs which might
             * be hot-plugged. For simplicity, add it for all CPUs.
             */
            if (arch_ids->cpus[i].props.has_node_id) {
                aml_append(dev, aml_name_decl("_PXM",
                           aml_int(arch_ids->cpus[i].props.node_id)));
            }

            aml_append(cpus_dev, dev);
        }
    }
    aml_append(sb_scope, cpus_dev);
    aml_append(table, sb_scope);

    method = aml_method(event_handler_method, 0, AML_NOTSERIALIZED);
    aml_append(method, aml_call0("\\_SB.CPUS." CPU_SCAN_METHOD));
    aml_append(table, method);

    g_free(cphp_res_path);
}
Commit	Line	Data
5e1b5d93 IM	1	#include "qemu/osdep.h"
	2	#include "hw/boards.h"
	3	#include "hw/acpi/cpu.h"
	4	#include "qapi/error.h"
112ed241	5	#include "qapi/qapi-events-misc.h"
5e1b5d93	6	#include "trace.h"
27111931	7	#include "sysemu/numa.h"
5e1b5d93 IM	8
	9	#define ACPI_CPU_HOTPLUG_REG_LEN 12
	10	#define ACPI_CPU_SELECTOR_OFFSET_WR 0
	11	#define ACPI_CPU_FLAGS_OFFSET_RW 4
d2238cb6 IM	12	#define ACPI_CPU_CMD_OFFSET_WR 5
	13	#define ACPI_CPU_CMD_DATA_OFFSET_RW 8
	14
	15	enum {
	16	CPHP_GET_NEXT_CPU_WITH_EVENT_CMD = 0,
76623d00 IM	17	CPHP_OST_EVENT_CMD = 1,
76623d00 IM	18	CPHP_OST_STATUS_CMD = 2,
d2238cb6 IM	19	CPHP_CMD_MAX
d2238cb6 IM	20	};
5e1b5d93	21
76623d00 IM	22	static ACPIOSTInfo acpi_cpu_device_status(int idx, AcpiCpuStatus cdev)
	23	{
	24	ACPIOSTInfo *info = g_new0(ACPIOSTInfo, 1);
	25
	26	info->slot_type = ACPI_SLOT_TYPE_CPU;
	27	info->slot = g_strdup_printf("%d", idx);
	28	info->source = cdev->ost_event;
	29	info->status = cdev->ost_status;
	30	if (cdev->cpu) {
	31	DeviceState *dev = DEVICE(cdev->cpu);
	32	if (dev->id) {
	33	info->device = g_strdup(dev->id);
	34	info->has_device = true;
	35	}
	36	}
	37	return info;
	38	}
	39
	40	void acpi_cpu_ospm_status(CPUHotplugState cpu_st, ACPIOSTInfoList **list)
	41	{
	42	int i;
	43
	44	for (i = 0; i < cpu_st->dev_count; i++) {
	45	ACPIOSTInfoList *elem = g_new0(ACPIOSTInfoList, 1);
	46	elem->value = acpi_cpu_device_status(i, &cpu_st->devs[i]);
	47	elem->next = NULL;
	48	**list = elem;
	49	*list = &elem->next;
	50	}
	51	}
	52
5e1b5d93 IM	53	static uint64_t cpu_hotplug_rd(void *opaque, hwaddr addr, unsigned size)
	54	{
	55	uint64_t val = 0;
	56	CPUHotplugState *cpu_st = opaque;
	57	AcpiCpuStatus *cdev;
	58
	59	if (cpu_st->selector >= cpu_st->dev_count) {
	60	return val;
	61	}
	62
	63	cdev = &cpu_st->devs[cpu_st->selector];
	64	switch (addr) {
	65	case ACPI_CPU_FLAGS_OFFSET_RW: /* pack and return is_* fields */
	66	val \|= cdev->cpu ? 1 : 0;
d2238cb6	67	val \|= cdev->is_inserting ? 2 : 0;
8872c25a	68	val \|= cdev->is_removing ? 4 : 0;
5e1b5d93 IM	69	trace_cpuhp_acpi_read_flags(cpu_st->selector, val);
5e1b5d93 IM	70	break;
d2238cb6 IM	71	case ACPI_CPU_CMD_DATA_OFFSET_RW:
	72	switch (cpu_st->command) {
	73	case CPHP_GET_NEXT_CPU_WITH_EVENT_CMD:
	74	val = cpu_st->selector;
	75	break;
	76	default:
	77	break;
	78	}
	79	trace_cpuhp_acpi_read_cmd_data(cpu_st->selector, val);
	80	break;
5e1b5d93 IM	81	default:
	82	break;
	83	}
	84	return val;
	85	}
	86
	87	static void cpu_hotplug_wr(void *opaque, hwaddr addr, uint64_t data,
	88	unsigned int size)
	89	{
	90	CPUHotplugState *cpu_st = opaque;
d2238cb6	91	AcpiCpuStatus *cdev;
76623d00	92	ACPIOSTInfo *info;
5e1b5d93 IM	93
	94	assert(cpu_st->dev_count);
	95
	96	if (addr) {
	97	if (cpu_st->selector >= cpu_st->dev_count) {
	98	trace_cpuhp_acpi_invalid_idx_selected(cpu_st->selector);
	99	return;
	100	}
	101	}
	102
	103	switch (addr) {
	104	case ACPI_CPU_SELECTOR_OFFSET_WR: /* current CPU selector */
	105	cpu_st->selector = data;
	106	trace_cpuhp_acpi_write_idx(cpu_st->selector);
	107	break;
d2238cb6 IM	108	case ACPI_CPU_FLAGS_OFFSET_RW: /* set is_* fields */
	109	cdev = &cpu_st->devs[cpu_st->selector];
	110	if (data & 2) { /* clear insert event */
	111	cdev->is_inserting = false;
	112	trace_cpuhp_acpi_clear_inserting_evt(cpu_st->selector);
8872c25a IM	113	} else if (data & 4) { /* clear remove event */
	114	cdev->is_removing = false;
	115	trace_cpuhp_acpi_clear_remove_evt(cpu_st->selector);
	116	} else if (data & 8) {
	117	DeviceState *dev = NULL;
	118	HotplugHandler *hotplug_ctrl = NULL;
	119
c2d2a81b	120	if (!cdev->cpu \|\| cdev->cpu == first_cpu) {
8872c25a IM	121	trace_cpuhp_acpi_ejecting_invalid_cpu(cpu_st->selector);
	122	break;
	123	}
	124
	125	trace_cpuhp_acpi_ejecting_cpu(cpu_st->selector);
	126	dev = DEVICE(cdev->cpu);
	127	hotplug_ctrl = qdev_get_hotplug_handler(dev);
	128	hotplug_handler_unplug(hotplug_ctrl, dev, NULL);
07578b0a	129	object_unparent(OBJECT(dev));
d2238cb6 IM	130	}
	131	break;
	132	case ACPI_CPU_CMD_OFFSET_WR:
	133	trace_cpuhp_acpi_write_cmd(cpu_st->selector, data);
	134	if (data < CPHP_CMD_MAX) {
	135	cpu_st->command = data;
	136	if (cpu_st->command == CPHP_GET_NEXT_CPU_WITH_EVENT_CMD) {
	137	uint32_t iter = cpu_st->selector;
	138
	139	do {
	140	cdev = &cpu_st->devs[iter];
8872c25a	141	if (cdev->is_inserting \|\| cdev->is_removing) {
d2238cb6 IM	142	cpu_st->selector = iter;
d2238cb6 IM	143	trace_cpuhp_acpi_cpu_has_events(cpu_st->selector,
8872c25a	144	cdev->is_inserting, cdev->is_removing);
d2238cb6 IM	145	break;
	146	}
	147	iter = iter + 1 < cpu_st->dev_count ? iter + 1 : 0;
	148	} while (iter != cpu_st->selector);
	149	}
	150	}
	151	break;
76623d00 IM	152	case ACPI_CPU_CMD_DATA_OFFSET_RW:
	153	switch (cpu_st->command) {
	154	case CPHP_OST_EVENT_CMD: {
	155	cdev = &cpu_st->devs[cpu_st->selector];
	156	cdev->ost_event = data;
	157	trace_cpuhp_acpi_write_ost_ev(cpu_st->selector, cdev->ost_event);
	158	break;
	159	}
	160	case CPHP_OST_STATUS_CMD: {
	161	cdev = &cpu_st->devs[cpu_st->selector];
	162	cdev->ost_status = data;
	163	info = acpi_cpu_device_status(cpu_st->selector, cdev);
3ab72385	164	qapi_event_send_acpi_device_ost(info);
76623d00 IM	165	qapi_free_ACPIOSTInfo(info);
	166	trace_cpuhp_acpi_write_ost_status(cpu_st->selector,
	167	cdev->ost_status);
	168	break;
	169	}
	170	default:
	171	break;
	172	}
	173	break;
5e1b5d93 IM	174	default:
	175	break;
	176	}
	177	}
	178
	179	static const MemoryRegionOps cpu_hotplug_ops = {
	180	.read = cpu_hotplug_rd,
	181	.write = cpu_hotplug_wr,
	182	.endianness = DEVICE_LITTLE_ENDIAN,
	183	.valid = {
	184	.min_access_size = 1,
	185	.max_access_size = 4,
	186	},
	187	};
	188
	189	void cpu_hotplug_hw_init(MemoryRegion as, Object owner,
	190	CPUHotplugState *state, hwaddr base_addr)
	191	{
	192	MachineState *machine = MACHINE(qdev_get_machine());
	193	MachineClass *mc = MACHINE_GET_CLASS(machine);
80e5db30	194	const CPUArchIdList *id_list;
5e1b5d93 IM	195	int i;
	196
	197	assert(mc->possible_cpu_arch_ids);
	198	id_list = mc->possible_cpu_arch_ids(machine);
	199	state->dev_count = id_list->len;
	200	state->devs = g_new0(typeof(*state->devs), state->dev_count);
	201	for (i = 0; i < id_list->len; i++) {
8aba3842	202	state->devs[i].cpu = CPU(id_list->cpus[i].cpu);
5e1b5d93 IM	203	state->devs[i].arch_id = id_list->cpus[i].arch_id;
5e1b5d93 IM	204	}
5e1b5d93 IM	205	memory_region_init_io(&state->ctrl_reg, owner, &cpu_hotplug_ops, state,
	206	"acpi-mem-hotplug", ACPI_CPU_HOTPLUG_REG_LEN);
	207	memory_region_add_subregion(as, base_addr, &state->ctrl_reg);
	208	}
	209
	210	static AcpiCpuStatus get_cpu_status(CPUHotplugState cpu_st, DeviceState *dev)
	211	{
	212	CPUClass *k = CPU_GET_CLASS(dev);
	213	uint64_t cpu_arch_id = k->get_arch_id(CPU(dev));
	214	int i;
	215
	216	for (i = 0; i < cpu_st->dev_count; i++) {
	217	if (cpu_arch_id == cpu_st->devs[i].arch_id) {
	218	return &cpu_st->devs[i];
	219	}
	220	}
	221	return NULL;
	222	}
	223
	224	void acpi_cpu_plug_cb(HotplugHandler *hotplug_dev,
	225	CPUHotplugState cpu_st, DeviceState dev, Error **errp)
	226	{
	227	AcpiCpuStatus *cdev;
	228
	229	cdev = get_cpu_status(cpu_st, dev);
	230	if (!cdev) {
	231	return;
	232	}
	233
	234	cdev->cpu = CPU(dev);
d2238cb6 IM	235	if (dev->hotplugged) {
	236	cdev->is_inserting = true;
	237	acpi_send_event(DEVICE(hotplug_dev), ACPI_CPU_HOTPLUG_STATUS);
	238	}
5e1b5d93 IM	239	}
5e1b5d93 IM	240
8872c25a IM	241	void acpi_cpu_unplug_request_cb(HotplugHandler *hotplug_dev,
	242	CPUHotplugState *cpu_st,
	243	DeviceState dev, Error *errp)
	244	{
	245	AcpiCpuStatus *cdev;
	246
	247	cdev = get_cpu_status(cpu_st, dev);
	248	if (!cdev) {
	249	return;
	250	}
	251
	252	cdev->is_removing = true;
	253	acpi_send_event(DEVICE(hotplug_dev), ACPI_CPU_HOTPLUG_STATUS);
	254	}
	255
	256	void acpi_cpu_unplug_cb(CPUHotplugState *cpu_st,
	257	DeviceState dev, Error *errp)
	258	{
	259	AcpiCpuStatus *cdev;
	260
	261	cdev = get_cpu_status(cpu_st, dev);
	262	if (!cdev) {
	263	return;
	264	}
	265
	266	cdev->cpu = NULL;
	267	}
	268
d2238cb6 IM	269	static const VMStateDescription vmstate_cpuhp_sts = {
	270	.name = "CPU hotplug device state",
	271	.version_id = 1,
	272	.minimum_version_id = 1,
	273	.minimum_version_id_old = 1,
	274	.fields = (VMStateField[]) {
	275	VMSTATE_BOOL(is_inserting, AcpiCpuStatus),
8872c25a	276	VMSTATE_BOOL(is_removing, AcpiCpuStatus),
76623d00 IM	277	VMSTATE_UINT32(ost_event, AcpiCpuStatus),
76623d00 IM	278	VMSTATE_UINT32(ost_status, AcpiCpuStatus),
d2238cb6 IM	279	VMSTATE_END_OF_LIST()
	280	}
	281	};
	282
5e1b5d93 IM	283	const VMStateDescription vmstate_cpu_hotplug = {
	284	.name = "CPU hotplug state",
	285	.version_id = 1,
	286	.minimum_version_id = 1,
	287	.minimum_version_id_old = 1,
	288	.fields = (VMStateField[]) {
	289	VMSTATE_UINT32(selector, CPUHotplugState),
d2238cb6 IM	290	VMSTATE_UINT8(command, CPUHotplugState),
	291	VMSTATE_STRUCT_VARRAY_POINTER_UINT32(devs, CPUHotplugState, dev_count,
	292	vmstate_cpuhp_sts, AcpiCpuStatus),
5e1b5d93 IM	293	VMSTATE_END_OF_LIST()
	294	}
	295	};
	296
	297	#define CPU_NAME_FMT "C%.03X"
	298	#define CPUHP_RES_DEVICE "PRES"
	299	#define CPU_LOCK "CPLK"
	300	#define CPU_STS_METHOD "CSTA"
d2238cb6 IM	301	#define CPU_SCAN_METHOD "CSCN"
d2238cb6 IM	302	#define CPU_NOTIFY_METHOD "CTFY"
8872c25a	303	#define CPU_EJECT_METHOD "CEJ0"
76623d00	304	#define CPU_OST_METHOD "COST"
5e1b5d93 IM	305
	306	#define CPU_ENABLED "CPEN"
	307	#define CPU_SELECTOR "CSEL"
d2238cb6 IM	308	#define CPU_COMMAND "CCMD"
	309	#define CPU_DATA "CDAT"
	310	#define CPU_INSERT_EVENT "CINS"
8872c25a IM	311	#define CPU_REMOVE_EVENT "CRMV"
8872c25a IM	312	#define CPU_EJECT_EVENT "CEJ0"
5e1b5d93 IM	313
	314	void build_cpus_aml(Aml table, MachineState machine, CPUHotplugFeatures opts,
	315	hwaddr io_base,
d2238cb6 IM	316	const char *res_root,
d2238cb6 IM	317	const char *event_handler_method)
5e1b5d93 IM	318	{
	319	Aml *ifctx;
	320	Aml *field;
	321	Aml *method;
	322	Aml *cpu_ctrl_dev;
	323	Aml *cpus_dev;
	324	Aml *zero = aml_int(0);
	325	Aml *one = aml_int(1);
	326	Aml *sb_scope = aml_scope("_SB");
	327	MachineClass *mc = MACHINE_GET_CLASS(machine);
80e5db30	328	const CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(machine);
5e1b5d93	329	char *cphp_res_path = g_strdup_printf("%s." CPUHP_RES_DEVICE, res_root);
d2238cb6 IM	330	Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, NULL);
	331	AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj);
	332	AcpiDeviceIf *adev = ACPI_DEVICE_IF(obj);
5e1b5d93 IM	333
	334	cpu_ctrl_dev = aml_device("%s", cphp_res_path);
	335	{
	336	Aml *crs;
	337
	338	aml_append(cpu_ctrl_dev,
	339	aml_name_decl("_HID", aml_eisaid("PNP0A06")));
	340	aml_append(cpu_ctrl_dev,
	341	aml_name_decl("_UID", aml_string("CPU Hotplug resources")));
	342	aml_append(cpu_ctrl_dev, aml_mutex(CPU_LOCK, 0));
	343
	344	crs = aml_resource_template();
	345	aml_append(crs, aml_io(AML_DECODE16, io_base, io_base, 1,
	346	ACPI_CPU_HOTPLUG_REG_LEN));
	347	aml_append(cpu_ctrl_dev, aml_name_decl("_CRS", crs));
	348
	349	/* declare CPU hotplug MMIO region with related access fields */
	350	aml_append(cpu_ctrl_dev,
	351	aml_operation_region("PRST", AML_SYSTEM_IO, aml_int(io_base),
	352	ACPI_CPU_HOTPLUG_REG_LEN));
	353
	354	field = aml_field("PRST", AML_BYTE_ACC, AML_NOLOCK,
	355	AML_WRITE_AS_ZEROS);
	356	aml_append(field, aml_reserved_field(ACPI_CPU_FLAGS_OFFSET_RW * 8));
	357	/* 1 if enabled, read only */
	358	aml_append(field, aml_named_field(CPU_ENABLED, 1));
d2238cb6 IM	359	/* (read) 1 if has a insert event. (write) 1 to clear event */
d2238cb6 IM	360	aml_append(field, aml_named_field(CPU_INSERT_EVENT, 1));
8872c25a IM	361	/* (read) 1 if has a remove event. (write) 1 to clear event */
	362	aml_append(field, aml_named_field(CPU_REMOVE_EVENT, 1));
	363	/* initiates device eject, write only */
	364	aml_append(field, aml_named_field(CPU_EJECT_EVENT, 1));
	365	aml_append(field, aml_reserved_field(4));
d2238cb6	366	aml_append(field, aml_named_field(CPU_COMMAND, 8));
5e1b5d93 IM	367	aml_append(cpu_ctrl_dev, field);
	368
	369	field = aml_field("PRST", AML_DWORD_ACC, AML_NOLOCK, AML_PRESERVE);
	370	/* CPU selector, write only */
	371	aml_append(field, aml_named_field(CPU_SELECTOR, 32));
d2238cb6 IM	372	/* flags + cmd + 2byte align */
	373	aml_append(field, aml_reserved_field(4 * 8));
	374	aml_append(field, aml_named_field(CPU_DATA, 32));
5e1b5d93 IM	375	aml_append(cpu_ctrl_dev, field);
5e1b5d93 IM	376
679dd1a9 IM	377	if (opts.has_legacy_cphp) {
	378	method = aml_method("_INI", 0, AML_SERIALIZED);
	379	/* switch off legacy CPU hotplug HW and use new one,
	380	* on reboot system is in new mode and writing 0
	381	* in CPU_SELECTOR selects BSP, which is NOP at
	382	* the time _INI is called */
	383	aml_append(method, aml_store(zero, aml_name(CPU_SELECTOR)));
	384	aml_append(cpu_ctrl_dev, method);
	385	}
5e1b5d93 IM	386	}
	387	aml_append(sb_scope, cpu_ctrl_dev);
	388
	389	cpus_dev = aml_device("\\_SB.CPUS");
	390	{
	391	int i;
	392	Aml *ctrl_lock = aml_name("%s.%s", cphp_res_path, CPU_LOCK);
	393	Aml *cpu_selector = aml_name("%s.%s", cphp_res_path, CPU_SELECTOR);
	394	Aml *is_enabled = aml_name("%s.%s", cphp_res_path, CPU_ENABLED);
d2238cb6 IM	395	Aml *cpu_cmd = aml_name("%s.%s", cphp_res_path, CPU_COMMAND);
	396	Aml *cpu_data = aml_name("%s.%s", cphp_res_path, CPU_DATA);
	397	Aml *ins_evt = aml_name("%s.%s", cphp_res_path, CPU_INSERT_EVENT);
8872c25a IM	398	Aml *rm_evt = aml_name("%s.%s", cphp_res_path, CPU_REMOVE_EVENT);
8872c25a IM	399	Aml *ej_evt = aml_name("%s.%s", cphp_res_path, CPU_EJECT_EVENT);
5e1b5d93 IM	400
	401	aml_append(cpus_dev, aml_name_decl("_HID", aml_string("ACPI0010")));
	402	aml_append(cpus_dev, aml_name_decl("_CID", aml_eisaid("PNP0A05")));
	403
d2238cb6 IM	404	method = aml_method(CPU_NOTIFY_METHOD, 2, AML_NOTSERIALIZED);
	405	for (i = 0; i < arch_ids->len; i++) {
	406	Aml *cpu = aml_name(CPU_NAME_FMT, i);
	407	Aml *uid = aml_arg(0);
	408	Aml *event = aml_arg(1);
	409
	410	ifctx = aml_if(aml_equal(uid, aml_int(i)));
	411	{
	412	aml_append(ifctx, aml_notify(cpu, event));
	413	}
	414	aml_append(method, ifctx);
	415	}
	416	aml_append(cpus_dev, method);
	417
5e1b5d93 IM	418	method = aml_method(CPU_STS_METHOD, 1, AML_SERIALIZED);
	419	{
	420	Aml *idx = aml_arg(0);
	421	Aml *sta = aml_local(0);
	422
	423	aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
	424	aml_append(method, aml_store(idx, cpu_selector));
	425	aml_append(method, aml_store(zero, sta));
	426	ifctx = aml_if(aml_equal(is_enabled, one));
	427	{
	428	aml_append(ifctx, aml_store(aml_int(0xF), sta));
	429	}
	430	aml_append(method, ifctx);
	431	aml_append(method, aml_release(ctrl_lock));
	432	aml_append(method, aml_return(sta));
	433	}
	434	aml_append(cpus_dev, method);
	435
8872c25a IM	436	method = aml_method(CPU_EJECT_METHOD, 1, AML_SERIALIZED);
	437	{
	438	Aml *idx = aml_arg(0);
	439
	440	aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
	441	aml_append(method, aml_store(idx, cpu_selector));
	442	aml_append(method, aml_store(one, ej_evt));
	443	aml_append(method, aml_release(ctrl_lock));
	444	}
	445	aml_append(cpus_dev, method);
	446
d2238cb6 IM	447	method = aml_method(CPU_SCAN_METHOD, 0, AML_SERIALIZED);
d2238cb6 IM	448	{
8872c25a	449	Aml *else_ctx;
d2238cb6 IM	450	Aml *while_ctx;
	451	Aml *has_event = aml_local(0);
	452	Aml *dev_chk = aml_int(1);
8872c25a	453	Aml *eject_req = aml_int(3);
d2238cb6 IM	454	Aml *next_cpu_cmd = aml_int(CPHP_GET_NEXT_CPU_WITH_EVENT_CMD);
	455
	456	aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
	457	aml_append(method, aml_store(one, has_event));
	458	while_ctx = aml_while(aml_equal(has_event, one));
	459	{
8872c25a	460	/* clear loop exit condition, ins_evt/rm_evt checks
d2238cb6 IM	461	* will set it to 1 while next_cpu_cmd returns a CPU
	462	* with events */
	463	aml_append(while_ctx, aml_store(zero, has_event));
	464	aml_append(while_ctx, aml_store(next_cpu_cmd, cpu_cmd));
	465	ifctx = aml_if(aml_equal(ins_evt, one));
	466	{
	467	aml_append(ifctx,
	468	aml_call2(CPU_NOTIFY_METHOD, cpu_data, dev_chk));
	469	aml_append(ifctx, aml_store(one, ins_evt));
	470	aml_append(ifctx, aml_store(one, has_event));
	471	}
	472	aml_append(while_ctx, ifctx);
8872c25a IM	473	else_ctx = aml_else();
	474	ifctx = aml_if(aml_equal(rm_evt, one));
	475	{
	476	aml_append(ifctx,
	477	aml_call2(CPU_NOTIFY_METHOD, cpu_data, eject_req));
	478	aml_append(ifctx, aml_store(one, rm_evt));
	479	aml_append(ifctx, aml_store(one, has_event));
	480	}
	481	aml_append(else_ctx, ifctx);
	482	aml_append(while_ctx, else_ctx);
d2238cb6 IM	483	}
	484	aml_append(method, while_ctx);
	485	aml_append(method, aml_release(ctrl_lock));
	486	}
	487	aml_append(cpus_dev, method);
	488
76623d00 IM	489	method = aml_method(CPU_OST_METHOD, 4, AML_SERIALIZED);
	490	{
	491	Aml *uid = aml_arg(0);
	492	Aml *ev_cmd = aml_int(CPHP_OST_EVENT_CMD);
	493	Aml *st_cmd = aml_int(CPHP_OST_STATUS_CMD);
	494
	495	aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
	496	aml_append(method, aml_store(uid, cpu_selector));
	497	aml_append(method, aml_store(ev_cmd, cpu_cmd));
	498	aml_append(method, aml_store(aml_arg(1), cpu_data));
	499	aml_append(method, aml_store(st_cmd, cpu_cmd));
	500	aml_append(method, aml_store(aml_arg(2), cpu_data));
	501	aml_append(method, aml_release(ctrl_lock));
	502	}
	503	aml_append(cpus_dev, method);
	504
5e1b5d93 IM	505	/* build Processor object for each processor */
	506	for (i = 0; i < arch_ids->len; i++) {
	507	Aml *dev;
	508	Aml *uid = aml_int(i);
d2238cb6	509	GArray *madt_buf = g_array_new(0, 1, 1);
5e1b5d93 IM	510	int arch_id = arch_ids->cpus[i].arch_id;
5e1b5d93 IM	511
89cb0c04	512	if (opts.acpi_1_compatible && arch_id < 255) {
5e1b5d93 IM	513	dev = aml_processor(i, 0, 0, CPU_NAME_FMT, i);
	514	} else {
	515	dev = aml_device(CPU_NAME_FMT, i);
	516	aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007")));
	517	aml_append(dev, aml_name_decl("_UID", uid));
	518	}
	519
	520	method = aml_method("_STA", 0, AML_SERIALIZED);
	521	aml_append(method, aml_return(aml_call1(CPU_STS_METHOD, uid)));
	522	aml_append(dev, method);
	523
d2238cb6 IM	524	/* build _MAT object */
	525	assert(adevc && adevc->madt_cpu);
	526	adevc->madt_cpu(adev, i, arch_ids, madt_buf);
	527	switch (madt_buf->data[0]) {
	528	case ACPI_APIC_PROCESSOR: {
	529	AcpiMadtProcessorApic apic = (void )madt_buf->data;
	530	apic->flags = cpu_to_le32(1);
	531	break;
	532	}
e2c95939 IM	533	case ACPI_APIC_LOCAL_X2APIC: {
	534	AcpiMadtProcessorX2Apic apic = (void )madt_buf->data;
	535	apic->flags = cpu_to_le32(1);
	536	break;
	537	}
d2238cb6 IM	538	default:
	539	assert(0);
	540	}
	541	aml_append(dev, aml_name_decl("_MAT",
	542	aml_buffer(madt_buf->len, (uint8_t *)madt_buf->data)));
	543	g_array_free(madt_buf, true);
	544
c2d2a81b IM	545	if (CPU(arch_ids->cpus[i].cpu) != first_cpu) {
	546	method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
	547	aml_append(method, aml_call1(CPU_EJECT_METHOD, uid));
	548	aml_append(dev, method);
	549	}
8872c25a	550
76623d00 IM	551	method = aml_method("_OST", 3, AML_SERIALIZED);
	552	aml_append(method,
	553	aml_call4(CPU_OST_METHOD, uid, aml_arg(0),
	554	aml_arg(1), aml_arg(2))
	555	);
	556	aml_append(dev, method);
27111931 IM	557
	558	/* Linux guests discard SRAT info for non-present CPUs
	559	* as a result _PXM is required for all CPUs which might
	560	* be hot-plugged. For simplicity, add it for all CPUs.
	561	*/
ea265072 IM	562	if (arch_ids->cpus[i].props.has_node_id) {
	563	aml_append(dev, aml_name_decl("_PXM",
	564	aml_int(arch_ids->cpus[i].props.node_id)));
27111931 IM	565	}
27111931 IM	566
5e1b5d93 IM	567	aml_append(cpus_dev, dev);
	568	}
	569	}
	570	aml_append(sb_scope, cpus_dev);
	571	aml_append(table, sb_scope);
	572
d2238cb6 IM	573	method = aml_method(event_handler_method, 0, AML_NOTSERIALIZED);
	574	aml_append(method, aml_call0("\\_SB.CPUS." CPU_SCAN_METHOD));
	575	aml_append(table, method);
	576
5e1b5d93	577	g_free(cphp_res_path);
5e1b5d93	578	}