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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2024, NVIDIA CORPORATION & AFFILIATES. All rights reserved
*/
#include "qemu/osdep.h"
#include "hw/acpi/acpi_generic_initiator.h"
#include "hw/acpi/aml-build.h"
#include "hw/boards.h"
#include "hw/pci/pci_device.h"
#include "qemu/error-report.h"
typedef struct AcpiGenericInitiatorClass {
ObjectClass parent_class;
} AcpiGenericInitiatorClass;
OBJECT_DEFINE_TYPE_WITH_INTERFACES(AcpiGenericInitiator, acpi_generic_initiator,
ACPI_GENERIC_INITIATOR, OBJECT,
{ TYPE_USER_CREATABLE },
{ NULL })
OBJECT_DECLARE_SIMPLE_TYPE(AcpiGenericInitiator, ACPI_GENERIC_INITIATOR)
static void acpi_generic_initiator_init(Object *obj)
{
AcpiGenericInitiator *gi = ACPI_GENERIC_INITIATOR(obj);
gi->node = MAX_NODES;
gi->pci_dev = NULL;
}
static void acpi_generic_initiator_finalize(Object *obj)
{
AcpiGenericInitiator *gi = ACPI_GENERIC_INITIATOR(obj);
g_free(gi->pci_dev);
}
static void acpi_generic_initiator_set_pci_device(Object *obj, const char *val,
Error **errp)
{
AcpiGenericInitiator *gi = ACPI_GENERIC_INITIATOR(obj);
gi->pci_dev = g_strdup(val);
}
static void acpi_generic_initiator_set_node(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
AcpiGenericInitiator *gi = ACPI_GENERIC_INITIATOR(obj);
MachineState *ms = MACHINE(qdev_get_machine());
uint32_t value;
if (!visit_type_uint32(v, name, &value, errp)) {
return;
}
if (value >= MAX_NODES) {
error_printf("%s: Invalid NUMA node specified\n",
TYPE_ACPI_GENERIC_INITIATOR);
exit(1);
}
gi->node = value;
ms->numa_state->nodes[gi->node].has_gi = true;
}
static void acpi_generic_initiator_class_init(ObjectClass *oc, void *data)
{
object_class_property_add_str(oc, "pci-dev", NULL,
acpi_generic_initiator_set_pci_device);
object_class_property_add(oc, "node", "int", NULL,
acpi_generic_initiator_set_node, NULL, NULL);
}
/*
* ACPI 6.3:
* Table 5-78 Generic Initiator Affinity Structure
*/
static void
build_srat_generic_pci_initiator_affinity(GArray *table_data, int node,
PCIDeviceHandle *handle)
{
uint8_t index;
build_append_int_noprefix(table_data, 5, 1); /* Type */
build_append_int_noprefix(table_data, 32, 1); /* Length */
build_append_int_noprefix(table_data, 0, 1); /* Reserved */
build_append_int_noprefix(table_data, 1, 1); /* Device Handle Type: PCI */
build_append_int_noprefix(table_data, node, 4); /* Proximity Domain */
/* Device Handle - PCI */
build_append_int_noprefix(table_data, handle->segment, 2);
build_append_int_noprefix(table_data, handle->bdf, 2);
for (index = 0; index < 12; index++) {
build_append_int_noprefix(table_data, 0, 1);
}
build_append_int_noprefix(table_data, GEN_AFFINITY_ENABLED, 4); /* Flags */
build_append_int_noprefix(table_data, 0, 4); /* Reserved */
}
static int build_all_acpi_generic_initiators(Object *obj, void *opaque)
{
MachineState *ms = MACHINE(qdev_get_machine());
AcpiGenericInitiator *gi;
GArray *table_data = opaque;
PCIDeviceHandle dev_handle;
PCIDevice *pci_dev;
Object *o;
if (!object_dynamic_cast(obj, TYPE_ACPI_GENERIC_INITIATOR)) {
return 0;
}
gi = ACPI_GENERIC_INITIATOR(obj);
if (gi->node >= ms->numa_state->num_nodes) {
error_printf("%s: Specified node %d is invalid.\n",
TYPE_ACPI_GENERIC_INITIATOR, gi->node);
exit(1);
}
o = object_resolve_path_type(gi->pci_dev, TYPE_PCI_DEVICE, NULL);
if (!o) {
error_printf("%s: Specified device must be a PCI device.\n",
TYPE_ACPI_GENERIC_INITIATOR);
exit(1);
}
pci_dev = PCI_DEVICE(o);
dev_handle.segment = 0;
dev_handle.bdf = PCI_BUILD_BDF(pci_bus_num(pci_get_bus(pci_dev)),
pci_dev->devfn);
build_srat_generic_pci_initiator_affinity(table_data,
gi->node, &dev_handle);
return 0;
}
void build_srat_generic_pci_initiator(GArray *table_data)
{
object_child_foreach_recursive(object_get_root(),
build_all_acpi_generic_initiators,
table_data);
}
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