Commit 84344884 authored by Shannon Zhao's avatar Shannon Zhao Committed by Peter Maydell
Browse files

hw/arm/virt-acpi-build: Generate MCFG table 



Generate MCFG table for PCIe controller.

Signed-off-by: default avatarShannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: default avatarShannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: default avatarAlex Bennée <alex.bennee@linaro.org>
Message-id: 1432522520-8068-14-git-send-email-zhaoshenglong@huawei.com
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent d4bec5d8

hw/arm/virt-acpi-build.c

+23 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
#include "hw/loader.h"

#include "hw/hw.h"

#include "hw/acpi/aml-build.h"

#include "hw/pci/pcie_host.h"



#define ARM_SPI_BASE 32
@@ -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)
@@ -350,6 +370,9 @@ 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);