aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--hw/acpi/Makefile.objs1
-rw-r--r--hw/acpi/cpu.c240
-rw-r--r--hw/acpi/ich9.c9
-rw-r--r--hw/acpi/piix4.c11
-rw-r--r--hw/acpi/trace-events5
-rw-r--r--include/hw/acpi/cpu.h51
-rw-r--r--include/hw/acpi/ich9.h2
7 files changed, 313 insertions, 6 deletions
diff --git a/hw/acpi/Makefile.objs b/hw/acpi/Makefile.objs
index 1a48f61..4b7da66 100644
--- a/hw/acpi/Makefile.objs
+++ b/hw/acpi/Makefile.objs
@@ -2,6 +2,7 @@ common-obj-$(CONFIG_ACPI_X86) += core.o piix4.o pcihp.o
common-obj-$(CONFIG_ACPI_X86_ICH) += ich9.o tco.o
common-obj-$(CONFIG_ACPI_CPU_HOTPLUG) += cpu_hotplug.o
common-obj-$(CONFIG_ACPI_MEMORY_HOTPLUG) += memory_hotplug.o memory_hotplug_acpi_table.o
+common-obj-$(CONFIG_ACPI_CPU_HOTPLUG) += cpu.o
obj-$(CONFIG_ACPI_NVDIMM) += nvdimm.o
common-obj-$(CONFIG_ACPI) += acpi_interface.o
common-obj-$(CONFIG_ACPI) += bios-linker-loader.o
diff --git a/hw/acpi/cpu.c b/hw/acpi/cpu.c
new file mode 100644
index 0000000..d99002c
--- /dev/null
+++ b/hw/acpi/cpu.c
@@ -0,0 +1,240 @@
+#include "qemu/osdep.h"
+#include "hw/boards.h"
+#include "hw/acpi/cpu.h"
+#include "qapi/error.h"
+#include "trace.h"
+
+#define ACPI_CPU_HOTPLUG_REG_LEN 12
+#define ACPI_CPU_SELECTOR_OFFSET_WR 0
+#define ACPI_CPU_FLAGS_OFFSET_RW 4
+
+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;
+ trace_cpuhp_acpi_read_flags(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;
+
+ 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;
+ 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);
+ 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 = id_list->cpus[i].cpu;
+ state->devs[i].arch_id = id_list->cpus[i].arch_id;
+ }
+ g_free(id_list);
+ 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);
+}
+
+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_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_ENABLED "CPEN"
+#define CPU_SELECTOR "CSEL"
+
+void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts,
+ hwaddr io_base,
+ const char *res_root)
+{
+ 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);
+ CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(machine);
+ char *cphp_res_path = g_strdup_printf("%s." CPUHP_RES_DEVICE, res_root);
+
+ 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));
+ 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));
+ aml_append(cpu_ctrl_dev, field);
+
+ }
+ 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_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_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);
+
+ /* build Processor object for each processor */
+ for (i = 0; i < arch_ids->len; i++) {
+ Aml *dev;
+ Aml *uid = aml_int(i);
+ int arch_id = arch_ids->cpus[i].arch_id;
+
+ if (opts.apci_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);
+
+ aml_append(cpus_dev, dev);
+ }
+ }
+ aml_append(sb_scope, cpus_dev);
+ aml_append(table, sb_scope);
+
+ g_free(cphp_res_path);
+ g_free(arch_ids);
+}
diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c
index ed16940..9a81da8 100644
--- a/hw/acpi/ich9.c
+++ b/hw/acpi/ich9.c
@@ -459,9 +459,12 @@ void ich9_pm_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
acpi_memory_plug_cb(hotplug_dev, &lpc->pm.acpi_memory_hotplug,
dev, errp);
- } else if (lpc->pm.cpu_hotplug_legacy &&
- object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
- legacy_acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.gpe_cpu, dev, errp);
+ } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
+ if (lpc->pm.cpu_hotplug_legacy) {
+ legacy_acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.gpe_cpu, dev, errp);
+ } else {
+ acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.cpuhp_state, dev, errp);
+ }
} else {
error_setg(errp, "acpi: device plug request for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c
index 9ae3964..6351d2e 100644
--- a/hw/acpi/piix4.c
+++ b/hw/acpi/piix4.c
@@ -34,6 +34,7 @@
#include "hw/acpi/piix4.h"
#include "hw/acpi/pcihp.h"
#include "hw/acpi/cpu_hotplug.h"
+#include "hw/acpi/cpu.h"
#include "hw/hotplug.h"
#include "hw/mem/pc-dimm.h"
#include "hw/acpi/memory_hotplug.h"
@@ -88,6 +89,7 @@ typedef struct PIIX4PMState {
bool cpu_hotplug_legacy;
AcpiCpuHotplug gpe_cpu;
+ CPUHotplugState cpuhp_state;
MemHotplugState acpi_memory_hotplug;
} PIIX4PMState;
@@ -352,9 +354,12 @@ static void piix4_device_plug_cb(HotplugHandler *hotplug_dev,
acpi_memory_plug_cb(hotplug_dev, &s->acpi_memory_hotplug, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
acpi_pcihp_device_plug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev, errp);
- } else if (s->cpu_hotplug_legacy &&
- object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
- legacy_acpi_cpu_plug_cb(hotplug_dev, &s->gpe_cpu, dev, errp);
+ } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
+ if (s->cpu_hotplug_legacy) {
+ legacy_acpi_cpu_plug_cb(hotplug_dev, &s->gpe_cpu, dev, errp);
+ } else {
+ acpi_cpu_plug_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
+ }
} else {
error_setg(errp, "acpi: device plug request for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
diff --git a/hw/acpi/trace-events b/hw/acpi/trace-events
index e95b218..940467b 100644
--- a/hw/acpi/trace-events
+++ b/hw/acpi/trace-events
@@ -16,3 +16,8 @@ mhp_acpi_clear_insert_evt(uint32_t slot) "slot[0x%"PRIx32"] clear insert event"
mhp_acpi_clear_remove_evt(uint32_t slot) "slot[0x%"PRIx32"] clear remove event"
mhp_acpi_pc_dimm_deleted(uint32_t slot) "slot[0x%"PRIx32"] pc-dimm deleted"
mhp_acpi_pc_dimm_delete_failed(uint32_t slot) "slot[0x%"PRIx32"] pc-dimm delete failed"
+
+# hw/acpi/cpu.c
+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
diff --git a/include/hw/acpi/cpu.h b/include/hw/acpi/cpu.h
new file mode 100644
index 0000000..f345447
--- /dev/null
+++ b/include/hw/acpi/cpu.h
@@ -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
diff --git a/include/hw/acpi/ich9.h b/include/hw/acpi/ich9.h
index e29a856..a352c94 100644
--- a/include/hw/acpi/ich9.h
+++ b/include/hw/acpi/ich9.h
@@ -23,6 +23,7 @@
#include "hw/acpi/acpi.h"
#include "hw/acpi/cpu_hotplug.h"
+#include "hw/acpi/cpu.h"
#include "hw/acpi/memory_hotplug.h"
#include "hw/acpi/acpi_dev_interface.h"
#include "hw/acpi/tco.h"
@@ -50,6 +51,7 @@ typedef struct ICH9LPCPMRegs {
bool cpu_hotplug_legacy;
AcpiCpuHotplug gpe_cpu;
+ CPUHotplugState cpuhp_state;
MemHotplugState acpi_memory_hotplug;
generated by cgit v1.1 at 2024-12-24 12:25:57 +0000