diff mbox

[v2,02/13] acpi: enable INTR for DMAR report structure

Message ID 1460366363-4589-3-git-send-email-peterx@redhat.com
State New
Headers show

Commit Message

Peter Xu April 11, 2016, 9:19 a.m. UTC 
In ACPI DMA remapping report structure, enable INTR flag when specified.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 hw/i386/acpi-build.c          | 12 +++++++++---
 include/hw/i386/intel_iommu.h |  2 ++
 2 files changed, 11 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 35180ef..cf0121e 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2565,16 +2565,22 @@  build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info)
 }
 
 static void
-build_dmar_q35(GArray *table_data, GArray *linker)
+build_dmar_q35(MachineState *ms, GArray *table_data, GArray *linker)
 {
     int dmar_start = table_data->len;
 
     AcpiTableDmar *dmar;
     AcpiDmarHardwareUnit *drhd;
+    uint8_t dmar_flags = 0;
+
+    if (ms->iommu_intr) {
+        /* enable INTR for the IOMMU device */
+        dmar_flags |= DMAR_REPORT_F_INTR;
+    }
 
     dmar = acpi_data_push(table_data, sizeof(*dmar));
     dmar->host_address_width = VTD_HOST_ADDRESS_WIDTH - 1;
-    dmar->flags = 0;    /* No intr_remap for now */
+    dmar->flags = dmar_flags;
 
     /* DMAR Remapping Hardware Unit Definition structure */
     drhd = acpi_data_push(table_data, sizeof(*drhd));
@@ -2735,7 +2741,7 @@  void acpi_build(AcpiBuildTables *tables, MachineState *machine)
     }
     if (acpi_has_iommu()) {
         acpi_add_table(table_offsets, tables_blob);
-        build_dmar_q35(tables_blob, tables->linker);
+        build_dmar_q35(MACHINE(pcms), tables_blob, tables->linker);
     }
     if (pcms->acpi_nvdimm_state.is_enabled) {
         nvdimm_build_acpi(table_offsets, tables_blob, tables->linker);
diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h
index b024ffa..0d89796 100644
--- a/include/hw/i386/intel_iommu.h
+++ b/include/hw/i386/intel_iommu.h
@@ -44,6 +44,8 @@ 
 #define VTD_HOST_ADDRESS_WIDTH      39
 #define VTD_HAW_MASK                ((1ULL << VTD_HOST_ADDRESS_WIDTH) - 1)
 
+#define DMAR_REPORT_F_INTR          (1)
+
 typedef struct VTDContextEntry VTDContextEntry;
 typedef struct VTDContextCacheEntry VTDContextCacheEntry;
 typedef struct IntelIOMMUState IntelIOMMUState;