b7f23f62e4
Implement _DSM according to:
PCI Firmware Specification 3.1
4.6.7. DSM for Naming a PCI or PCI Express Device Under
Operating Systems
and wire it up to cold and hot-plugged PCI devices.
Feature depends on ACPI hotplug being enabled (as that provides
PCI devices descriptions in ACPI and MMIO registers that are
reused to fetch acpi-index).
acpi-index should work for
- cold plugged NICs:
$QEMU -device e1000,acpi-index=100
=> 'eno100'
- hot-plugged
(monitor) device_add e1000,acpi-index=200,id=remove_me
=> 'eno200'
- re-plugged
(monitor) device_del remove_me
(monitor) device_add e1000,acpi-index=1
=> 'eno1'
Windows also sees index under "PCI Label Id" field in properties
dialog but otherwise it doesn't seem to have any effect.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20210315180102.3008391-6-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/*
|
|
* 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/>.
|
|
*/
|
|
|
|
#ifndef HW_ACPI_PCI_H
|
|
#define HW_ACPI_PCI_H
|
|
|
|
#include "hw/acpi/bios-linker-loader.h"
|
|
|
|
typedef struct AcpiMcfgInfo {
|
|
uint64_t base;
|
|
uint32_t size;
|
|
} AcpiMcfgInfo;
|
|
|
|
void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info,
|
|
const char *oem_id, const char *oem_table_id);
|
|
Aml *aml_pci_device_dsm(void);
|
|
#endif
|