Shannon Zhao <zhaoshengl...@huawei.com> writes:
> From: Shannon Zhao <shannon.z...@linaro.org>
>
> Generate MCFG table for PCIe controller.
>
> Signed-off-by: Shannon Zhao <zhaoshengl...@huawei.com>
> Signed-off-by: Shannon Zhao <shannon.z...@linaro.org>
Reviewed-by: Alex Bennée <alex.ben...@linaro.org>
> ---
> hw/arm/virt-acpi-build.c | 23 +++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
>
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index 19ba69e..80d4e64 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -39,6 +39,7 @@
> #include "hw/loader.h"
> #include "hw/hw.h"
> #include "hw/acpi/aml-build.h"
> +#include "hw/pci/pcie_host.h"
>
> typedef struct VirtAcpiCpuInfo {
> DECLARE_BITMAP(found_cpus, VIRT_ACPI_CPU_ID_LIMIT);
> @@ -180,6 +181,25 @@ build_rsdp(GArray *rsdp_table, GArray *linker, unsigned
> rsdt)
> return rsdp_table;
> }
>
> +static void
> +build_mcfg(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
> +{
> + AcpiTableMcfg *mcfg;
> + const MemMapEntry *memmap = guest_info->memmap;
> + int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
> +
> + mcfg = acpi_data_push(table_data, len);
> + mcfg->allocation[0].address = cpu_to_le64(memmap[VIRT_PCIE_ECAM].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 = (memmap[VIRT_PCIE_ECAM].size
> + / PCIE_MMCFG_SIZE_MIN) - 1;
> +
> + build_header(linker, table_data, (void *)mcfg, "MCFG", len, 5);
> +}
> +
> /* GTDT */
> static void
> build_gtdt(GArray *table_data, GArray *linker)
> @@ -348,6 +368,9 @@ void virt_acpi_build(VirtGuestInfo *guest_info,
> AcpiBuildTables *tables)
> acpi_add_table(table_offsets, tables_blob);
> build_gtdt(tables_blob, tables->linker);
>
> + acpi_add_table(table_offsets, tables_blob);
> + build_mcfg(tables_blob, tables->linker, guest_info);
> +
> /* RSDT is pointed to by RSDP */
> rsdt = tables_blob->len;
> build_rsdt(tables_blob, tables->linker, table_offsets);
--
Alex Bennée
