pc: acpi: factor out cpu hotplug code from build_ssdt() into separate function

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:
Igor Mammedov 2015-12-28 18:02:28 +01:00 committed by Michael S. Tsirkin
parent 6b30608774
commit 5ca5efa4a6
1 changed files with 94 additions and 80 deletions

View File

@ -931,6 +931,98 @@ static Aml *build_crs(PCIHostState *host,
return crs;
}
static void build_processor_devices(Aml *sb_scope, unsigned acpi_cpus,
AcpiCpuInfo *cpu, AcpiPmInfo *pm)
{
int i;
Aml *dev;
Aml *crs;
Aml *pkg;
Aml *field;
Aml *ifctx;
Aml *method;
/* The current AML generator can cover the APIC ID range [0..255],
* inclusive, for VCPU hotplug. */
QEMU_BUILD_BUG_ON(ACPI_CPU_HOTPLUG_ID_LIMIT > 256);
g_assert(acpi_cpus <= ACPI_CPU_HOTPLUG_ID_LIMIT);
/* create PCI0.PRES device and its _CRS to reserve CPU hotplug MMIO */
dev = aml_device("PCI0." stringify(CPU_HOTPLUG_RESOURCE_DEVICE));
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A06")));
aml_append(dev,
aml_name_decl("_UID", aml_string("CPU Hotplug resources"))
);
/* device present, functioning, decoding, not shown in UI */
aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
crs = aml_resource_template();
aml_append(crs,
aml_io(AML_DECODE16, pm->cpu_hp_io_base, pm->cpu_hp_io_base, 1,
pm->cpu_hp_io_len)
);
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(sb_scope, dev);
/* declare CPU hotplug MMIO region and PRS field to access it */
aml_append(sb_scope, aml_operation_region(
"PRST", AML_SYSTEM_IO, pm->cpu_hp_io_base, pm->cpu_hp_io_len));
field = aml_field("PRST", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
aml_append(field, aml_named_field("PRS", 256));
aml_append(sb_scope, field);
/* build Processor object for each processor */
for (i = 0; i < acpi_cpus; i++) {
dev = aml_processor(i, 0, 0, "CP%.02X", i);
method = aml_method("_MAT", 0, AML_NOTSERIALIZED);
aml_append(method,
aml_return(aml_call1(CPU_MAT_METHOD, aml_int(i))));
aml_append(dev, method);
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method,
aml_return(aml_call1(CPU_STATUS_METHOD, aml_int(i))));
aml_append(dev, method);
method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
aml_append(method,
aml_return(aml_call2(CPU_EJECT_METHOD, aml_int(i), aml_arg(0)))
);
aml_append(dev, method);
aml_append(sb_scope, dev);
}
/* build this code:
* Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...}
*/
/* Arg0 = Processor ID = APIC ID */
method = aml_method(AML_NOTIFY_METHOD, 2, AML_NOTSERIALIZED);
for (i = 0; i < acpi_cpus; i++) {
ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i)));
aml_append(ifctx,
aml_notify(aml_name("CP%.02X", i), aml_arg(1))
);
aml_append(method, ifctx);
}
aml_append(sb_scope, method);
/* build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })"
*
* Note: The ability to create variable-sized packages was first
* introduced in ACPI 2.0. ACPI 1.0 only allowed fixed-size packages
* ith up to 255 elements. Windows guests up to win2k8 fail when
* VarPackageOp is used.
*/
pkg = acpi_cpus <= 255 ? aml_package(acpi_cpus) :
aml_varpackage(acpi_cpus);
for (i = 0; i < acpi_cpus; i++) {
uint8_t b = test_bit(i, cpu->found_cpus) ? 0x01 : 0x00;
aml_append(pkg, aml_int(b));
}
aml_append(sb_scope, aml_name_decl(CPU_ON_BITMAP, pkg));
}
static void build_memory_devices(Aml *sb_scope, int nr_mem,
uint16_t io_base, uint16_t io_len)
{
@ -1062,8 +1154,7 @@ build_ssdt(GArray *table_data, GArray *linker,
{
MachineState *machine = MACHINE(qdev_get_machine());
uint32_t nr_mem = machine->ram_slots;
unsigned acpi_cpus = guest_info->apic_id_limit;
Aml *ssdt, *sb_scope, *scope, *pkg, *dev, *method, *crs, *field, *ifctx;
Aml *ssdt, *sb_scope, *scope, *pkg, *dev, *method, *crs, *field;
PCIBus *bus = NULL;
GPtrArray *io_ranges = g_ptr_array_new_with_free_func(crs_range_free);
GPtrArray *mem_ranges = g_ptr_array_new_with_free_func(crs_range_free);
@ -1072,10 +1163,6 @@ build_ssdt(GArray *table_data, GArray *linker,
int i;
ssdt = init_aml_allocator();
/* The current AML generator can cover the APIC ID range [0..255],
* inclusive, for VCPU hotplug. */
QEMU_BUILD_BUG_ON(ACPI_CPU_HOTPLUG_ID_LIMIT > 256);
g_assert(acpi_cpus <= ACPI_CPU_HOTPLUG_ID_LIMIT);
/* Reserve space for header */
acpi_data_push(ssdt->buf, sizeof(AcpiTableHeader));
@ -1297,80 +1384,7 @@ build_ssdt(GArray *table_data, GArray *linker,
sb_scope = aml_scope("\\_SB");
{
/* create PCI0.PRES device and its _CRS to reserve CPU hotplug MMIO */
dev = aml_device("PCI0." stringify(CPU_HOTPLUG_RESOURCE_DEVICE));
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A06")));
aml_append(dev,
aml_name_decl("_UID", aml_string("CPU Hotplug resources"))
);
/* device present, functioning, decoding, not shown in UI */
aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
crs = aml_resource_template();
aml_append(crs,
aml_io(AML_DECODE16, pm->cpu_hp_io_base, pm->cpu_hp_io_base, 1,
pm->cpu_hp_io_len)
);
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(sb_scope, dev);
/* declare CPU hotplug MMIO region and PRS field to access it */
aml_append(sb_scope, aml_operation_region(
"PRST", AML_SYSTEM_IO, pm->cpu_hp_io_base, pm->cpu_hp_io_len));
field = aml_field("PRST", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
aml_append(field, aml_named_field("PRS", 256));
aml_append(sb_scope, field);
/* build Processor object for each processor */
for (i = 0; i < acpi_cpus; i++) {
dev = aml_processor(i, 0, 0, "CP%.02X", i);
method = aml_method("_MAT", 0, AML_NOTSERIALIZED);
aml_append(method,
aml_return(aml_call1(CPU_MAT_METHOD, aml_int(i))));
aml_append(dev, method);
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method,
aml_return(aml_call1(CPU_STATUS_METHOD, aml_int(i))));
aml_append(dev, method);
method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
aml_append(method,
aml_return(aml_call2(CPU_EJECT_METHOD, aml_int(i), aml_arg(0)))
);
aml_append(dev, method);
aml_append(sb_scope, dev);
}
/* build this code:
* Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...}
*/
/* Arg0 = Processor ID = APIC ID */
method = aml_method(AML_NOTIFY_METHOD, 2, AML_NOTSERIALIZED);
for (i = 0; i < acpi_cpus; i++) {
ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i)));
aml_append(ifctx,
aml_notify(aml_name("CP%.02X", i), aml_arg(1))
);
aml_append(method, ifctx);
}
aml_append(sb_scope, method);
/* build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })"
*
* Note: The ability to create variable-sized packages was first
* introduced in ACPI 2.0. ACPI 1.0 only allowed fixed-size packages
* ith up to 255 elements. Windows guests up to win2k8 fail when
* VarPackageOp is used.
*/
pkg = acpi_cpus <= 255 ? aml_package(acpi_cpus) :
aml_varpackage(acpi_cpus);
for (i = 0; i < acpi_cpus; i++) {
uint8_t b = test_bit(i, cpu->found_cpus) ? 0x01 : 0x00;
aml_append(pkg, aml_int(b));
}
aml_append(sb_scope, aml_name_decl(CPU_ON_BITMAP, pkg));
build_processor_devices(sb_scope, guest_info->apic_id_limit, cpu, pm);
build_memory_devices(sb_scope, nr_mem, pm->mem_hp_io_base,
pm->mem_hp_io_len);