Patchwork [v2,4/4] hw/acpi: Extract build_mcfg to pci.c

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Submitter Wei Yang
Date April 15, 2019, 7:03 a.m.
Message ID <20190415070307.13668-5-richardw.yang@linux.intel.com>
Download mbox | patch
Permalink /patch/772861/
State New
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Comments

Wei Yang - April 15, 2019, 7:03 a.m.
Now we have two identical build_mcfg function.

Extract them to pci.c.

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>

---
v2:
  * put it to dedicated file pci.c
---
 default-configs/arm-softmmu.mak  |  1 +
 default-configs/i386-softmmu.mak |  1 +
 hw/acpi/Kconfig                  |  4 +++
 hw/acpi/Makefile.objs            |  1 +
 hw/acpi/pci.c                    | 46 ++++++++++++++++++++++++++++++++
 hw/arm/virt-acpi-build.c         | 18 +------------
 hw/i386/acpi-build.c             | 19 ++-----------
 include/hw/acpi/pci.h            |  5 ++++
 8 files changed, 61 insertions(+), 34 deletions(-)
 create mode 100644 hw/acpi/pci.c
 create mode 100644 include/hw/acpi/pci.h
Philippe Mathieu-Daudé - April 15, 2019, 1:01 p.m.
Hi Wei,

On 4/15/19 9:03 AM, Wei Yang wrote:
> Now we have two identical build_mcfg function.
> 
> Extract them to pci.c.
> 
> Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
> 
> ---
> v2:
>   * put it to dedicated file pci.c
> ---
>  default-configs/arm-softmmu.mak  |  1 +
>  default-configs/i386-softmmu.mak |  1 +
>  hw/acpi/Kconfig                  |  4 +++
>  hw/acpi/Makefile.objs            |  1 +
>  hw/acpi/pci.c                    | 46 ++++++++++++++++++++++++++++++++
>  hw/arm/virt-acpi-build.c         | 18 +------------
>  hw/i386/acpi-build.c             | 19 ++-----------
>  include/hw/acpi/pci.h            |  5 ++++
>  8 files changed, 61 insertions(+), 34 deletions(-)
>  create mode 100644 hw/acpi/pci.c
>  create mode 100644 include/hw/acpi/pci.h
> 
> diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak
> index 613d19a06d..8f2796e195 100644
> --- a/default-configs/arm-softmmu.mak
> +++ b/default-configs/arm-softmmu.mak
> @@ -144,6 +144,7 @@ CONFIG_XIO3130=y
>  CONFIG_IOH3420=y
>  CONFIG_I82801B11=y
>  CONFIG_ACPI=y
> +CONFIG_ACPI_PCI=y
>  CONFIG_ARM_VIRT=y
>  CONFIG_SMBIOS=y
>  CONFIG_ASPEED_SOC=y
> diff --git a/default-configs/i386-softmmu.mak b/default-configs/i386-softmmu.mak
> index ba3fb3ff50..cd5ea391e8 100644
> --- a/default-configs/i386-softmmu.mak
> +++ b/default-configs/i386-softmmu.mak
> @@ -25,3 +25,4 @@
>  CONFIG_ISAPC=y
>  CONFIG_I440FX=y
>  CONFIG_Q35=y
> +CONFIG_ACPI_PCI=y
> diff --git a/hw/acpi/Kconfig b/hw/acpi/Kconfig
> index eca3beed75..7265843cc3 100644
> --- a/hw/acpi/Kconfig
> +++ b/hw/acpi/Kconfig
> @@ -23,6 +23,10 @@ config ACPI_NVDIMM
>      bool
>      depends on ACPI
>  
> +config ACPI_PCI
> +    bool
> +    depends on ACPI
> +
>  config ACPI_VMGENID
>      bool
>      default y
> diff --git a/hw/acpi/Makefile.objs b/hw/acpi/Makefile.objs
> index ba93c5b64a..9bb2101e3b 100644
> --- a/hw/acpi/Makefile.objs
> +++ b/hw/acpi/Makefile.objs
> @@ -11,6 +11,7 @@ common-obj-$(call lnot,$(CONFIG_ACPI_X86)) += acpi-stub.o
>  common-obj-y += acpi_interface.o
>  common-obj-y += bios-linker-loader.o
>  common-obj-y += aml-build.o utils.o
> +common-obj-$(CONFIG_ACPI_PCI) += pci.o
>  common-obj-$(CONFIG_TPM) += tpm.o
>  
>  common-obj-$(CONFIG_IPMI) += ipmi.o
> diff --git a/hw/acpi/pci.c b/hw/acpi/pci.c
> new file mode 100644
> index 0000000000..fa0fa30bb9
> --- /dev/null
> +++ b/hw/acpi/pci.c
> @@ -0,0 +1,46 @@
> +/*
> + * 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/>.
> + */

Here you correctly added the copyright boilerplate, ...

> +
> +#include "qemu/osdep.h"
> +#include "hw/acpi/aml-build.h"
> +#include "hw/acpi/pci.h"
> +#include "hw/pci/pcie_host.h"
> +
> +void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
> +{
> +    AcpiTableMcfg *mcfg;
> +    int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
> +
> +    mcfg = acpi_data_push(table_data, len);
> +    mcfg->allocation[0].address = cpu_to_le64(info->base);
> +
> +    /* Only a single allocation so no need to play with segments */
> +    mcfg->allocation[0].pci_segment = cpu_to_le16(0);
> +    mcfg->allocation[0].start_bus_number = 0;
> +    mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->size - 1);
> +
> +    build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
> +}
> +
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index 7350f207b5..e3353de9e4 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -40,6 +40,7 @@
>  #include "hw/hw.h"
>  #include "hw/acpi/aml-build.h"
>  #include "hw/acpi/utils.h"
> +#include "hw/acpi/pci.h"
>  #include "hw/pci/pcie_host.h"
>  #include "hw/pci/pci.h"
>  #include "hw/arm/virt.h"
> @@ -545,23 +546,6 @@ build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>                   "SRAT", table_data->len - srat_start, 3, NULL, NULL);
>  }
>  
> -static void
> -build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
> -{
> -    AcpiTableMcfg *mcfg;
> -    int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
> -
> -    mcfg = acpi_data_push(table_data, len);
> -    mcfg->allocation[0].address = cpu_to_le64(info->base);
> -
> -    /* Only a single allocation so no need to play with segments */
> -    mcfg->allocation[0].pci_segment = cpu_to_le16(0);
> -    mcfg->allocation[0].start_bus_number = 0;
> -    mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->size - 1);
> -
> -    build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
> -}
> -
>  /* GTDT */
>  static void
>  build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> index 7613b245cf..29980bb3f4 100644
> --- a/hw/i386/acpi-build.c
> +++ b/hw/i386/acpi-build.c
> @@ -58,6 +58,7 @@
>  
>  #include "hw/acpi/aml-build.h"
>  #include "hw/acpi/utils.h"
> +#include "hw/acpi/pci.h"
>  
>  #include "qom/qom-qobject.h"
>  #include "hw/i386/amd_iommu.h"
> @@ -2392,22 +2393,6 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>                   table_data->len - srat_start, 1, NULL, NULL);
>  }
>  
> -static void
> -build_mcfg_q35(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
> -{
> -    AcpiTableMcfg *mcfg;
> -    int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]);
> -
> -    mcfg = acpi_data_push(table_data, len);
> -    mcfg->allocation[0].address = cpu_to_le64(info->base);
> -    /* Only a single allocation so no need to play with segments */
> -    mcfg->allocation[0].pci_segment = cpu_to_le16(0);
> -    mcfg->allocation[0].start_bus_number = 0;
> -    mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->size - 1);
> -
> -    build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
> -}
> -
>  /*
>   * VT-d spec 8.1 DMA Remapping Reporting Structure
>   * (version Oct. 2014 or later)
> @@ -2677,7 +2662,7 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine)
>      }
>      if (acpi_get_mcfg(&mcfg)) {
>          acpi_add_table(table_offsets, tables_blob);
> -        build_mcfg_q35(tables_blob, tables->linker, &mcfg);
> +        build_mcfg(tables_blob, tables->linker, &mcfg);
>      }
>      if (x86_iommu_get_default()) {
>          IommuType IOMMUType = x86_iommu_get_type();
> diff --git a/include/hw/acpi/pci.h b/include/hw/acpi/pci.h
> new file mode 100644
> index 0000000000..6f94ac4926
> --- /dev/null
> +++ b/include/hw/acpi/pci.h
> @@ -0,0 +1,5 @@
> +#ifndef HW_ACPI_PCI_H
> +#define HW_ACPI_PCI_H

But here you missed it :(

> +
> +void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info);
> +#endif
> 

With the same copyright notice in the header:
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Regards,

Phil.
Igor Mammedov - April 15, 2019, 2:14 p.m.
On Mon, 15 Apr 2019 15:03:07 +0800
Wei Yang <richardw.yang@linux.intel.com> wrote:

> Now we have two identical build_mcfg function.
s/function./functions,/

> 
> Extract them to pci.c.
s|.*|consolidate them in acpi/pci.c|

> 
> Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>

with above and Philippe's comment addressed 

Reviewed-by: Igor Mammedov <imammedo@redhat.com>

> 
> ---
> v2:
>   * put it to dedicated file pci.c
> ---
>  default-configs/arm-softmmu.mak  |  1 +
>  default-configs/i386-softmmu.mak |  1 +
>  hw/acpi/Kconfig                  |  4 +++
>  hw/acpi/Makefile.objs            |  1 +
>  hw/acpi/pci.c                    | 46 ++++++++++++++++++++++++++++++++
>  hw/arm/virt-acpi-build.c         | 18 +------------
>  hw/i386/acpi-build.c             | 19 ++-----------
>  include/hw/acpi/pci.h            |  5 ++++
>  8 files changed, 61 insertions(+), 34 deletions(-)
>  create mode 100644 hw/acpi/pci.c
>  create mode 100644 include/hw/acpi/pci.h
> 
> diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak
> index 613d19a06d..8f2796e195 100644
> --- a/default-configs/arm-softmmu.mak
> +++ b/default-configs/arm-softmmu.mak
> @@ -144,6 +144,7 @@ CONFIG_XIO3130=y
>  CONFIG_IOH3420=y
>  CONFIG_I82801B11=y
>  CONFIG_ACPI=y
> +CONFIG_ACPI_PCI=y
>  CONFIG_ARM_VIRT=y
>  CONFIG_SMBIOS=y
>  CONFIG_ASPEED_SOC=y
> diff --git a/default-configs/i386-softmmu.mak b/default-configs/i386-softmmu.mak
> index ba3fb3ff50..cd5ea391e8 100644
> --- a/default-configs/i386-softmmu.mak
> +++ b/default-configs/i386-softmmu.mak
> @@ -25,3 +25,4 @@
>  CONFIG_ISAPC=y
>  CONFIG_I440FX=y
>  CONFIG_Q35=y
> +CONFIG_ACPI_PCI=y
> diff --git a/hw/acpi/Kconfig b/hw/acpi/Kconfig
> index eca3beed75..7265843cc3 100644
> --- a/hw/acpi/Kconfig
> +++ b/hw/acpi/Kconfig
> @@ -23,6 +23,10 @@ config ACPI_NVDIMM
>      bool
>      depends on ACPI
>  
> +config ACPI_PCI
> +    bool
> +    depends on ACPI
> +
>  config ACPI_VMGENID
>      bool
>      default y
> diff --git a/hw/acpi/Makefile.objs b/hw/acpi/Makefile.objs
> index ba93c5b64a..9bb2101e3b 100644
> --- a/hw/acpi/Makefile.objs
> +++ b/hw/acpi/Makefile.objs
> @@ -11,6 +11,7 @@ common-obj-$(call lnot,$(CONFIG_ACPI_X86)) += acpi-stub.o
>  common-obj-y += acpi_interface.o
>  common-obj-y += bios-linker-loader.o
>  common-obj-y += aml-build.o utils.o
> +common-obj-$(CONFIG_ACPI_PCI) += pci.o
>  common-obj-$(CONFIG_TPM) += tpm.o
>  
>  common-obj-$(CONFIG_IPMI) += ipmi.o
> diff --git a/hw/acpi/pci.c b/hw/acpi/pci.c
> new file mode 100644
> index 0000000000..fa0fa30bb9
> --- /dev/null
> +++ b/hw/acpi/pci.c
> @@ -0,0 +1,46 @@
> +/*
> + * 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 "hw/acpi/aml-build.h"
> +#include "hw/acpi/pci.h"
> +#include "hw/pci/pcie_host.h"
> +
> +void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
> +{
> +    AcpiTableMcfg *mcfg;
> +    int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
> +
> +    mcfg = acpi_data_push(table_data, len);
> +    mcfg->allocation[0].address = cpu_to_le64(info->base);
> +
> +    /* Only a single allocation so no need to play with segments */
> +    mcfg->allocation[0].pci_segment = cpu_to_le16(0);
> +    mcfg->allocation[0].start_bus_number = 0;
> +    mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->size - 1);
> +
> +    build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
> +}
> +
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index 7350f207b5..e3353de9e4 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -40,6 +40,7 @@
>  #include "hw/hw.h"
>  #include "hw/acpi/aml-build.h"
>  #include "hw/acpi/utils.h"
> +#include "hw/acpi/pci.h"
>  #include "hw/pci/pcie_host.h"
>  #include "hw/pci/pci.h"
>  #include "hw/arm/virt.h"
> @@ -545,23 +546,6 @@ build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>                   "SRAT", table_data->len - srat_start, 3, NULL, NULL);
>  }
>  
> -static void
> -build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
> -{
> -    AcpiTableMcfg *mcfg;
> -    int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
> -
> -    mcfg = acpi_data_push(table_data, len);
> -    mcfg->allocation[0].address = cpu_to_le64(info->base);
> -
> -    /* Only a single allocation so no need to play with segments */
> -    mcfg->allocation[0].pci_segment = cpu_to_le16(0);
> -    mcfg->allocation[0].start_bus_number = 0;
> -    mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->size - 1);
> -
> -    build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
> -}
> -
>  /* GTDT */
>  static void
>  build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> index 7613b245cf..29980bb3f4 100644
> --- a/hw/i386/acpi-build.c
> +++ b/hw/i386/acpi-build.c
> @@ -58,6 +58,7 @@
>  
>  #include "hw/acpi/aml-build.h"
>  #include "hw/acpi/utils.h"
> +#include "hw/acpi/pci.h"
>  
>  #include "qom/qom-qobject.h"
>  #include "hw/i386/amd_iommu.h"
> @@ -2392,22 +2393,6 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>                   table_data->len - srat_start, 1, NULL, NULL);
>  }
>  
> -static void
> -build_mcfg_q35(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
> -{
> -    AcpiTableMcfg *mcfg;
> -    int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]);
> -
> -    mcfg = acpi_data_push(table_data, len);
> -    mcfg->allocation[0].address = cpu_to_le64(info->base);
> -    /* Only a single allocation so no need to play with segments */
> -    mcfg->allocation[0].pci_segment = cpu_to_le16(0);
> -    mcfg->allocation[0].start_bus_number = 0;
> -    mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->size - 1);
> -
> -    build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
> -}
> -
>  /*
>   * VT-d spec 8.1 DMA Remapping Reporting Structure
>   * (version Oct. 2014 or later)
> @@ -2677,7 +2662,7 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine)
>      }
>      if (acpi_get_mcfg(&mcfg)) {
>          acpi_add_table(table_offsets, tables_blob);
> -        build_mcfg_q35(tables_blob, tables->linker, &mcfg);
> +        build_mcfg(tables_blob, tables->linker, &mcfg);
>      }
>      if (x86_iommu_get_default()) {
>          IommuType IOMMUType = x86_iommu_get_type();
> diff --git a/include/hw/acpi/pci.h b/include/hw/acpi/pci.h
> new file mode 100644
> index 0000000000..6f94ac4926
> --- /dev/null
> +++ b/include/hw/acpi/pci.h
> @@ -0,0 +1,5 @@
> +#ifndef HW_ACPI_PCI_H
> +#define HW_ACPI_PCI_H
> +
> +void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info);
> +#endif
Wei Yang - April 16, 2019, 9:41 p.m.
On Mon, Apr 15, 2019 at 03:01:28PM +0200, Philippe Mathieu-Daud?? wrote:
>Hi Wei,
>
>On 4/15/19 9:03 AM, Wei Yang wrote:
>> Now we have two identical build_mcfg function.
>> 
>> Extract them to pci.c.
>> 
>> Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
>> 
>> ---
>> v2:
>>   * put it to dedicated file pci.c
>> ---
>>  default-configs/arm-softmmu.mak  |  1 +
>>  default-configs/i386-softmmu.mak |  1 +
>>  hw/acpi/Kconfig                  |  4 +++
>>  hw/acpi/Makefile.objs            |  1 +
>>  hw/acpi/pci.c                    | 46 ++++++++++++++++++++++++++++++++
>>  hw/arm/virt-acpi-build.c         | 18 +------------
>>  hw/i386/acpi-build.c             | 19 ++-----------
>>  include/hw/acpi/pci.h            |  5 ++++
>>  8 files changed, 61 insertions(+), 34 deletions(-)
>>  create mode 100644 hw/acpi/pci.c
>>  create mode 100644 include/hw/acpi/pci.h
>> 
>> diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak
>> index 613d19a06d..8f2796e195 100644
>> --- a/default-configs/arm-softmmu.mak
>> +++ b/default-configs/arm-softmmu.mak
>> @@ -144,6 +144,7 @@ CONFIG_XIO3130=y
>>  CONFIG_IOH3420=y
>>  CONFIG_I82801B11=y
>>  CONFIG_ACPI=y
>> +CONFIG_ACPI_PCI=y
>>  CONFIG_ARM_VIRT=y
>>  CONFIG_SMBIOS=y
>>  CONFIG_ASPEED_SOC=y
>> diff --git a/default-configs/i386-softmmu.mak b/default-configs/i386-softmmu.mak
>> index ba3fb3ff50..cd5ea391e8 100644
>> --- a/default-configs/i386-softmmu.mak
>> +++ b/default-configs/i386-softmmu.mak
>> @@ -25,3 +25,4 @@
>>  CONFIG_ISAPC=y
>>  CONFIG_I440FX=y
>>  CONFIG_Q35=y
>> +CONFIG_ACPI_PCI=y
>> diff --git a/hw/acpi/Kconfig b/hw/acpi/Kconfig
>> index eca3beed75..7265843cc3 100644
>> --- a/hw/acpi/Kconfig
>> +++ b/hw/acpi/Kconfig
>> @@ -23,6 +23,10 @@ config ACPI_NVDIMM
>>      bool
>>      depends on ACPI
>>  
>> +config ACPI_PCI
>> +    bool
>> +    depends on ACPI
>> +
>>  config ACPI_VMGENID
>>      bool
>>      default y
>> diff --git a/hw/acpi/Makefile.objs b/hw/acpi/Makefile.objs
>> index ba93c5b64a..9bb2101e3b 100644
>> --- a/hw/acpi/Makefile.objs
>> +++ b/hw/acpi/Makefile.objs
>> @@ -11,6 +11,7 @@ common-obj-$(call lnot,$(CONFIG_ACPI_X86)) += acpi-stub.o
>>  common-obj-y += acpi_interface.o
>>  common-obj-y += bios-linker-loader.o
>>  common-obj-y += aml-build.o utils.o
>> +common-obj-$(CONFIG_ACPI_PCI) += pci.o
>>  common-obj-$(CONFIG_TPM) += tpm.o
>>  
>>  common-obj-$(CONFIG_IPMI) += ipmi.o
>> diff --git a/hw/acpi/pci.c b/hw/acpi/pci.c
>> new file mode 100644
>> index 0000000000..fa0fa30bb9
>> --- /dev/null
>> +++ b/hw/acpi/pci.c
>> @@ -0,0 +1,46 @@
>> +/*
>> + * 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/>.
>> + */
>
>Here you correctly added the copyright boilerplate, ...
>
>> +
>> +#include "qemu/osdep.h"
>> +#include "hw/acpi/aml-build.h"
>> +#include "hw/acpi/pci.h"
>> +#include "hw/pci/pcie_host.h"
>> +
>> +void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
>> +{
>> +    AcpiTableMcfg *mcfg;
>> +    int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
>> +
>> +    mcfg = acpi_data_push(table_data, len);
>> +    mcfg->allocation[0].address = cpu_to_le64(info->base);
>> +
>> +    /* Only a single allocation so no need to play with segments */
>> +    mcfg->allocation[0].pci_segment = cpu_to_le16(0);
>> +    mcfg->allocation[0].start_bus_number = 0;
>> +    mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->size - 1);
>> +
>> +    build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
>> +}
>> +
>> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
>> index 7350f207b5..e3353de9e4 100644
>> --- a/hw/arm/virt-acpi-build.c
>> +++ b/hw/arm/virt-acpi-build.c
>> @@ -40,6 +40,7 @@
>>  #include "hw/hw.h"
>>  #include "hw/acpi/aml-build.h"
>>  #include "hw/acpi/utils.h"
>> +#include "hw/acpi/pci.h"
>>  #include "hw/pci/pcie_host.h"
>>  #include "hw/pci/pci.h"
>>  #include "hw/arm/virt.h"
>> @@ -545,23 +546,6 @@ build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>>                   "SRAT", table_data->len - srat_start, 3, NULL, NULL);
>>  }
>>  
>> -static void
>> -build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
>> -{
>> -    AcpiTableMcfg *mcfg;
>> -    int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
>> -
>> -    mcfg = acpi_data_push(table_data, len);
>> -    mcfg->allocation[0].address = cpu_to_le64(info->base);
>> -
>> -    /* Only a single allocation so no need to play with segments */
>> -    mcfg->allocation[0].pci_segment = cpu_to_le16(0);
>> -    mcfg->allocation[0].start_bus_number = 0;
>> -    mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->size - 1);
>> -
>> -    build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
>> -}
>> -
>>  /* GTDT */
>>  static void
>>  build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
>> index 7613b245cf..29980bb3f4 100644
>> --- a/hw/i386/acpi-build.c
>> +++ b/hw/i386/acpi-build.c
>> @@ -58,6 +58,7 @@
>>  
>>  #include "hw/acpi/aml-build.h"
>>  #include "hw/acpi/utils.h"
>> +#include "hw/acpi/pci.h"
>>  
>>  #include "qom/qom-qobject.h"
>>  #include "hw/i386/amd_iommu.h"
>> @@ -2392,22 +2393,6 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>>                   table_data->len - srat_start, 1, NULL, NULL);
>>  }
>>  
>> -static void
>> -build_mcfg_q35(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
>> -{
>> -    AcpiTableMcfg *mcfg;
>> -    int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]);
>> -
>> -    mcfg = acpi_data_push(table_data, len);
>> -    mcfg->allocation[0].address = cpu_to_le64(info->base);
>> -    /* Only a single allocation so no need to play with segments */
>> -    mcfg->allocation[0].pci_segment = cpu_to_le16(0);
>> -    mcfg->allocation[0].start_bus_number = 0;
>> -    mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->size - 1);
>> -
>> -    build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
>> -}
>> -
>>  /*
>>   * VT-d spec 8.1 DMA Remapping Reporting Structure
>>   * (version Oct. 2014 or later)
>> @@ -2677,7 +2662,7 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine)
>>      }
>>      if (acpi_get_mcfg(&mcfg)) {
>>          acpi_add_table(table_offsets, tables_blob);
>> -        build_mcfg_q35(tables_blob, tables->linker, &mcfg);
>> +        build_mcfg(tables_blob, tables->linker, &mcfg);
>>      }
>>      if (x86_iommu_get_default()) {
>>          IommuType IOMMUType = x86_iommu_get_type();
>> diff --git a/include/hw/acpi/pci.h b/include/hw/acpi/pci.h
>> new file mode 100644
>> index 0000000000..6f94ac4926
>> --- /dev/null
>> +++ b/include/hw/acpi/pci.h
>> @@ -0,0 +1,5 @@
>> +#ifndef HW_ACPI_PCI_H
>> +#define HW_ACPI_PCI_H
>
>But here you missed it :(
>

Ah, ok, I will add the copyright. Thanks :-)

>> +
>> +void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info);
>> +#endif
>> 
>
>With the same copyright notice in the header:
>Reviewed-by: Philippe Mathieu-Daud?? <philmd@redhat.com>
>
>Regards,
>
>Phil.

Patch

diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak
index 613d19a06d..8f2796e195 100644
--- a/default-configs/arm-softmmu.mak
+++ b/default-configs/arm-softmmu.mak
@@ -144,6 +144,7 @@  CONFIG_XIO3130=y
 CONFIG_IOH3420=y
 CONFIG_I82801B11=y
 CONFIG_ACPI=y
+CONFIG_ACPI_PCI=y
 CONFIG_ARM_VIRT=y
 CONFIG_SMBIOS=y
 CONFIG_ASPEED_SOC=y
diff --git a/default-configs/i386-softmmu.mak b/default-configs/i386-softmmu.mak
index ba3fb3ff50..cd5ea391e8 100644
--- a/default-configs/i386-softmmu.mak
+++ b/default-configs/i386-softmmu.mak
@@ -25,3 +25,4 @@ 
 CONFIG_ISAPC=y
 CONFIG_I440FX=y
 CONFIG_Q35=y
+CONFIG_ACPI_PCI=y
diff --git a/hw/acpi/Kconfig b/hw/acpi/Kconfig
index eca3beed75..7265843cc3 100644
--- a/hw/acpi/Kconfig
+++ b/hw/acpi/Kconfig
@@ -23,6 +23,10 @@  config ACPI_NVDIMM
     bool
     depends on ACPI
 
+config ACPI_PCI
+    bool
+    depends on ACPI
+
 config ACPI_VMGENID
     bool
     default y
diff --git a/hw/acpi/Makefile.objs b/hw/acpi/Makefile.objs
index ba93c5b64a..9bb2101e3b 100644
--- a/hw/acpi/Makefile.objs
+++ b/hw/acpi/Makefile.objs
@@ -11,6 +11,7 @@  common-obj-$(call lnot,$(CONFIG_ACPI_X86)) += acpi-stub.o
 common-obj-y += acpi_interface.o
 common-obj-y += bios-linker-loader.o
 common-obj-y += aml-build.o utils.o
+common-obj-$(CONFIG_ACPI_PCI) += pci.o
 common-obj-$(CONFIG_TPM) += tpm.o
 
 common-obj-$(CONFIG_IPMI) += ipmi.o
diff --git a/hw/acpi/pci.c b/hw/acpi/pci.c
new file mode 100644
index 0000000000..fa0fa30bb9
--- /dev/null
+++ b/hw/acpi/pci.c
@@ -0,0 +1,46 @@ 
+/*
+ * 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 "hw/acpi/aml-build.h"
+#include "hw/acpi/pci.h"
+#include "hw/pci/pcie_host.h"
+
+void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
+{
+    AcpiTableMcfg *mcfg;
+    int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
+
+    mcfg = acpi_data_push(table_data, len);
+    mcfg->allocation[0].address = cpu_to_le64(info->base);
+
+    /* Only a single allocation so no need to play with segments */
+    mcfg->allocation[0].pci_segment = cpu_to_le16(0);
+    mcfg->allocation[0].start_bus_number = 0;
+    mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->size - 1);
+
+    build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
+}
+
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 7350f207b5..e3353de9e4 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -40,6 +40,7 @@ 
 #include "hw/hw.h"
 #include "hw/acpi/aml-build.h"
 #include "hw/acpi/utils.h"
+#include "hw/acpi/pci.h"
 #include "hw/pci/pcie_host.h"
 #include "hw/pci/pci.h"
 #include "hw/arm/virt.h"
@@ -545,23 +546,6 @@  build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
                  "SRAT", table_data->len - srat_start, 3, NULL, NULL);
 }
 
-static void
-build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
-{
-    AcpiTableMcfg *mcfg;
-    int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
-
-    mcfg = acpi_data_push(table_data, len);
-    mcfg->allocation[0].address = cpu_to_le64(info->base);
-
-    /* Only a single allocation so no need to play with segments */
-    mcfg->allocation[0].pci_segment = cpu_to_le16(0);
-    mcfg->allocation[0].start_bus_number = 0;
-    mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->size - 1);
-
-    build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
-}
-
 /* GTDT */
 static void
 build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 7613b245cf..29980bb3f4 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -58,6 +58,7 @@ 
 
 #include "hw/acpi/aml-build.h"
 #include "hw/acpi/utils.h"
+#include "hw/acpi/pci.h"
 
 #include "qom/qom-qobject.h"
 #include "hw/i386/amd_iommu.h"
@@ -2392,22 +2393,6 @@  build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
                  table_data->len - srat_start, 1, NULL, NULL);
 }
 
-static void
-build_mcfg_q35(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
-{
-    AcpiTableMcfg *mcfg;
-    int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]);
-
-    mcfg = acpi_data_push(table_data, len);
-    mcfg->allocation[0].address = cpu_to_le64(info->base);
-    /* Only a single allocation so no need to play with segments */
-    mcfg->allocation[0].pci_segment = cpu_to_le16(0);
-    mcfg->allocation[0].start_bus_number = 0;
-    mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->size - 1);
-
-    build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
-}
-
 /*
  * VT-d spec 8.1 DMA Remapping Reporting Structure
  * (version Oct. 2014 or later)
@@ -2677,7 +2662,7 @@  void acpi_build(AcpiBuildTables *tables, MachineState *machine)
     }
     if (acpi_get_mcfg(&mcfg)) {
         acpi_add_table(table_offsets, tables_blob);
-        build_mcfg_q35(tables_blob, tables->linker, &mcfg);
+        build_mcfg(tables_blob, tables->linker, &mcfg);
     }
     if (x86_iommu_get_default()) {
         IommuType IOMMUType = x86_iommu_get_type();
diff --git a/include/hw/acpi/pci.h b/include/hw/acpi/pci.h
new file mode 100644
index 0000000000..6f94ac4926
--- /dev/null
+++ b/include/hw/acpi/pci.h
@@ -0,0 +1,5 @@ 
+#ifndef HW_ACPI_PCI_H
+#define HW_ACPI_PCI_H
+
+void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info);
+#endif