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/*
* Support for generating PCI related ACPI tables and passing them to Guests
*
* Copyright (C) 2006 Fabrice Bellard
* Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
* Copyright (C) 2013-2019 Red Hat Inc
* Copyright (C) 2019 Intel Corporation
*
* Author: Wei Yang <richardw.yang@linux.intel.com>
* Author: Michael S. Tsirkin <mst@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qemu/error-report.h"
#include "qom/object_interfaces.h"
#include "qapi/error.h"
#include "hw/boards.h"
#include "hw/acpi/aml-build.h"
#include "hw/acpi/pci.h"
#include "hw/pci/pci_device.h"
#include "hw/pci/pcie_host.h"
/*
* PCI Firmware Specification, Revision 3.0
* 4.1.2 MCFG Table Description.
*/
void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info,
const char *oem_id, const char *oem_table_id)
{
AcpiTable table = { .sig = "MCFG", .rev = 1,
.oem_id = oem_id, .oem_table_id = oem_table_id };
acpi_table_begin(&table, table_data);
/* Reserved */
build_append_int_noprefix(table_data, 0, 8);
/*
* Memory Mapped Enhanced Configuration Space Base Address Allocation
* Structure
*/
/* Base address, processor-relative */
build_append_int_noprefix(table_data, info->base, 8);
/* PCI segment group number */
build_append_int_noprefix(table_data, 0, 2);
/* Starting PCI Bus number */
build_append_int_noprefix(table_data, 0, 1);
/* Final PCI Bus number */
build_append_int_noprefix(table_data, PCIE_MMCFG_BUS(info->size - 1), 1);
/* Reserved */
build_append_int_noprefix(table_data, 0, 4);
acpi_table_end(linker, &table);
}
typedef struct AcpiGenericInitiator {
/* private */
Object parent;
/* public */
char *pci_dev;
uint16_t node;
} AcpiGenericInitiator;
typedef struct AcpiGenericInitiatorClass {
ObjectClass parent_class;
} AcpiGenericInitiatorClass;
#define TYPE_ACPI_GENERIC_INITIATOR "acpi-generic-initiator"
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);
}
static int build_acpi_generic_initiator(Object *obj, void *opaque)
{
MachineState *ms = MACHINE(qdev_get_machine());
AcpiGenericInitiator *gi;
GArray *table_data = opaque;
int32_t devfn;
uint8_t bus;
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);
}
bus = object_property_get_uint(o, "busnr", &error_fatal);
devfn = object_property_get_uint(o, "addr", &error_fatal);
/* devfn is constrained in PCI to be 8 bit but storage is an int32_t */
assert(devfn >= 0 && devfn < PCI_DEVFN_MAX);
build_srat_pci_generic_initiator(table_data, gi->node, 0, bus, devfn);
return 0;
}
void build_srat_generic_pci_initiator(GArray *table_data)
{
object_child_foreach_recursive(object_get_root(),
build_acpi_generic_initiator,
table_data);
}
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