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
/*
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* Support for generating PCI related ACPI tables and passing them to Guests
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*
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* Copyright (C) 2006 Fabrice Bellard
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* Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
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* Copyright (C) 2013-2019 Red Hat Inc
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* Copyright (C) 2019 Intel Corporation
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*
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* Author: Wei Yang <richardw.yang@linux.intel.com>
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* Author: Michael S. Tsirkin <mst@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef HW_ACPI_PCI_H
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#define HW_ACPI_PCI_H
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#include "hw/acpi/bios-linker-loader.h"
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typedef struct AcpiMcfgInfo {
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uint64_t base;
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uint32_t size;
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} AcpiMcfgInfo;
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void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info,
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const char *oem_id, const char *oem_table_id);
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Aml *aml_pci_device_dsm(void);
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#endif
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