[Qemu-devel] [PATCH v4 12/20] hw/arm/virt-acpi-build: Add PCIe info and generate MCFG table

[Shannon Zhao <zhaoshenglong@huawei.com>]

From: Shannon Zhao <shannon.zhao@linaro.org>

Add PCIe info struct, prepare for building PCIe table.
And generate MCFG table.

Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
---
 hw/arm/virt-acpi-build.c         | 21 +++++++++++++++++++++
 include/hw/arm/virt-acpi-build.h | 12 ++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index dd5538b..a979582 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -229,6 +229,24 @@ build_rsdt(GArray *table_data, GArray *linker, GArray *table_offsets)
                  (void *)rsdt, "RSDT", rsdt_len, 1);
 }
 
+static void
+build_mcfg(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
+{
+    AcpiTableMcfg *mcfg;
+    acpi_pcie_info *info = guest_info->pcie_info;
+    int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]);
+
+    mcfg = acpi_data_push(table_data, len);
+    mcfg->allocation[0].address = cpu_to_le64(info->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 = info->nr_pcie_buses - 1;
+
+    build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1);
+}
+
 /* GTDT */
 static void
 build_gtdt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
@@ -401,6 +419,9 @@ void virt_acpi_build(VirtGuestInfo *guest_info, AcpiBuildTables *tables)
     acpi_add_table(table_offsets, tables_blob);
     build_gtdt(tables_blob, tables->linker, guest_info);
 
+    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);
diff --git a/include/hw/arm/virt-acpi-build.h b/include/hw/arm/virt-acpi-build.h
index 2780856..d534489 100644
--- a/include/hw/arm/virt-acpi-build.h
+++ b/include/hw/arm/virt-acpi-build.h
@@ -47,6 +47,17 @@ typedef struct acpi_dsdt_info {
     const hwaddr *flash_addr;
 } acpi_dsdt_info;
 
+typedef struct acpi_pcie_info {
+    const int *pcie_irq;
+    hwaddr pcie_mmio_base;
+    hwaddr pcie_mmio_size;
+    hwaddr pcie_ioport_base;
+    hwaddr pcie_ioport_size;
+    hwaddr pcie_ecam_base;
+    hwaddr pcie_ecam_size;
+    int nr_pcie_buses;
+} acpi_pcie_info;
+
 typedef struct VirtGuestInfo {
     int smp_cpus;
     int max_cpus;
@@ -54,6 +65,7 @@ typedef struct VirtGuestInfo {
     acpi_madt_info *madt_info;
     acpi_dsdt_info *dsdt_info;
     acpi_gtdt_info *gtdt_info;
+    acpi_pcie_info *pcie_info;
 } VirtGuestInfo;
 
 
-- 
2.0.4