Add IVRS table for AMD IOMMU. Generate IVRS or DMAR
depending on emulated IOMMU
Signed-off-by: David Kiarie <davidkiar...@gmail.com>
---
hw/acpi/aml-build.c | 2 +-
hw/acpi/core.c | 13 ------
hw/i386/acpi-build.c | 101 +++++++++++++++++++++++++++++++++++++++-----
include/hw/acpi/acpi-defs.h | 14 ++++++
include/hw/acpi/acpi.h | 16 +++++++
include/hw/acpi/aml-build.h | 1 +
6 files changed, 122 insertions(+), 25 deletions(-)
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index ab89ca6..da11bf8 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -227,7 +227,7 @@ static void build_extop_package(GArray *package, uint8_t op)
build_prepend_byte(package, 0x5B); /* ExtOpPrefix */
}
-static void build_append_int_noprefix(GArray *table, uint64_t value, int size)
+void build_append_int_noprefix(GArray *table, uint64_t value, int size)
{
int i;
diff --git a/hw/acpi/core.c b/hw/acpi/core.c
index 7925a1a..ee0e687 100644
--- a/hw/acpi/core.c
+++ b/hw/acpi/core.c
@@ -29,19 +29,6 @@
#include "qapi-visit.h"
#include "qapi-event.h"
-struct acpi_table_header {
- uint16_t _length; /* our length, not actual part of the hdr */
- /* allows easier parsing for fw_cfg clients */
- char sig[4]; /* ACPI signature (4 ASCII characters) */
- uint32_t length; /* Length of table, in bytes, including header */
- uint8_t revision; /* ACPI Specification minor version # */
- uint8_t checksum; /* To make sum of entire table == 0 */
- char oem_id[6]; /* OEM identification */
- char oem_table_id[8]; /* OEM table identification */
- uint32_t oem_revision; /* OEM revision number */
- char asl_compiler_id[4]; /* ASL compiler vendor ID */
- uint32_t asl_compiler_revision; /* ASL compiler revision number */
-} QEMU_PACKED;
#define ACPI_TABLE_HDR_SIZE sizeof(struct acpi_table_header)
#define ACPI_TABLE_PFX_SIZE sizeof(uint16_t) /* size of the extra prefix */
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 6477003..19efc68 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -52,6 +52,7 @@
#include "hw/pci/pci_bus.h"
#include "hw/pci-host/q35.h"
#include "hw/i386/intel_iommu.h"
+#include "hw/i386/amd_iommu.h"
#include "hw/timer/hpet.h"
#include "hw/acpi/aml-build.h"
@@ -118,6 +119,12 @@ typedef struct AcpiBuildPciBusHotplugState {
bool pcihp_bridge_en;
} AcpiBuildPciBusHotplugState;
+typedef enum IommuType {
+ TYPE_AMD,
+ TYPE_INTEL,
+ TYPE_NONE
+} IommuType;
+
static void acpi_get_pm_info(AcpiPmInfo *pm)
{
Object *piix = piix4_pm_find();
@@ -2598,6 +2605,81 @@ build_dmar_q35(GArray *table_data, GArray *linker)
"DMAR", table_data->len - dmar_start, 1, NULL, NULL);
}
+#define IOMMU_IVRS_LENGTH 0x30
+/* increase ivdb length if more devices are added */
+#define IOMMU_IVDB_LENGTH 0x20
+
+static void
+build_amd_iommu(GArray *table_data, GArray *linker)
+{
+ int iommu_start = table_data->len;
+ bool iommu_ambig;
+
+ /* IVRS definition - table header has an extra 2-byte field */
+ acpi_data_push(table_data, (sizeof(acpi_table_header) - 2));
+ /* common virtualization information */
+ build_append_int_noprefix(table_data, AMD_IOMMU_HOST_ADDRESS_WIDTH << 8,
4);
+ /* reserved */
+ build_append_int_noprefix(table_data, 0, 8);
+
+ AMDIOMMUState *s = (AMDIOMMUState *)object_resolve_path_type("",
+ TYPE_AMD_IOMMU_DEVICE, &iommu_ambig);
+
+ /* IVDB definition - type 10h */
+ if (!iommu_ambig) {
+ /* IVHD definition - type 10h */
+ build_append_int_noprefix(table_data, 0x10, 1);
+ /* virtualization flags */
+ build_append_int_noprefix(table_data, (IVHD_HT_TUNEN |
+ IVHD_PPRSUP | IVHD_IOTLBSUP | IVHD_PREFSUP), 1);
+ /* ivhd length */
+ build_append_int_noprefix(table_data, IOMMU_IVDB_LENGTH, 2);
+ /* iommu device id */
+ build_append_int_noprefix(table_data, PCI_DEVICE_ID_RD890_IOMMU, 2);
+ /* offset of capability registers */
+ build_append_int_noprefix(table_data, s->capab_offset, 2);
+ /* mmio base register */
+ build_append_int_noprefix(table_data, s->mmio.addr, 8);
+ /* pci segment */
+ build_append_int_noprefix(table_data, 0, 2);
+ /* interrupt numbers */
+ build_append_int_noprefix(table_data, 0, 2);
+ /* feature reporting */
+ build_append_int_noprefix(table_data, (IVHD_EFR_GTSUP |
+ IVHD_EFR_HATS | IVHD_EFR_GATS), 4);
+ /* Add device flags here
+ * This is are 4-byte device entries currently reporting the range of
+ * devices 00h - ffffh; all devices
+ * Device setting affecting all devices should be made here
+ *
+ * Refer to
+ * (http://developer.amd.com/wordpress/media/2012/10/488821.pdf)
+ * Table 95
+ */
+ /* start of device range, 4-byte entries */
+ build_append_int_noprefix(table_data, 0x03000000, 4);
+ /* end of device range */
+ build_append_int_noprefix(table_data, 0x04ffff00, 4);
+ }
+
+ build_header(linker, table_data, (void *)(table_data->data + iommu_start),
+ "IVRS", table_data->len - iommu_start, 1, NULL, NULL);
+}
+
+static IommuType has_iommu(void)
+{
+ bool ambiguous;
+
+ if (object_resolve_path_type("", TYPE_AMD_IOMMU_DEVICE, &ambiguous)
+ && !ambiguous)
+ return TYPE_AMD;
+ else if (object_resolve_path_type("", TYPE_INTEL_IOMMU_DEVICE, &ambiguous)
+ && !ambiguous)
+ return TYPE_INTEL;
+ else
+ return TYPE_NONE;
+}
+
static GArray *
build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
{
@@ -2656,16 +2738,6 @@ static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg)
return true;
}
-static bool acpi_has_iommu(void)
-{
- bool ambiguous;
- Object *intel_iommu;
-
- intel_iommu = object_resolve_path_type("", TYPE_INTEL_IOMMU_DEVICE,
- &ambiguous);
- return intel_iommu && !ambiguous;
-}
-
static
void acpi_build(AcpiBuildTables *tables, MachineState *machine)
{
@@ -2678,6 +2750,7 @@ void acpi_build(AcpiBuildTables *tables, MachineState
*machine)
AcpiMcfgInfo mcfg;
PcPciInfo pci;
uint8_t *u;
+ IommuType IOMMUType = has_iommu();
size_t aml_len = 0;
GArray *tables_blob = tables->table_data;
AcpiSlicOem slic_oem = { .id = NULL, .table_id = NULL };
@@ -2743,7 +2816,13 @@ void acpi_build(AcpiBuildTables *tables, MachineState
*machine)
acpi_add_table(table_offsets, tables_blob);
build_mcfg_q35(tables_blob, tables->linker, &mcfg);
}
- if (acpi_has_iommu()) {
+
+ if (IOMMUType == TYPE_AMD) {
+ acpi_add_table(table_offsets, tables_blob);
+ build_amd_iommu(tables_blob, tables->linker);
+ }
+
+ if (IOMMUType == TYPE_INTEL) {
acpi_add_table(table_offsets, tables_blob);
build_dmar_q35(tables_blob, tables->linker);
}
diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
index c7a03d4..114227a 100644
--- a/include/hw/acpi/acpi-defs.h
+++ b/include/hw/acpi/acpi-defs.h
@@ -570,4 +570,18 @@ typedef struct AcpiDmarHardwareUnit AcpiDmarHardwareUnit;
/* Masks for Flags field above */
#define ACPI_DMAR_INCLUDE_PCI_ALL 1
+/* IVRS constants */
+#define AMD_IOMMU_HOST_ADDRESS_WIDTH 39UL
+
+/* flags in the IVHD headers */
+#define IVHD_HT_TUNEN (1UL << 0)
+#define IVHD_IOTLBSUP (1UL << 4)
+#define IVHD_PREFSUP (1UL << 6)
+#define IVHD_PPRSUP (1UL << 7)
+
+/* features in the IVHD headers */
+#define IVHD_EFR_HATS 48
+#define IVHD_EFR_GATS 48
+#define IVHD_EFR_GTSUP (1UL << 2)
+
#endif
diff --git a/include/hw/acpi/acpi.h b/include/hw/acpi/acpi.h
index e0978c8..a708b84 100644
--- a/include/hw/acpi/acpi.h
+++ b/include/hw/acpi/acpi.h
@@ -201,4 +201,20 @@ struct AcpiSlicOem {
};
int acpi_get_slic_oem(AcpiSlicOem *oem);
+struct acpi_table_header {
+ uint16_t _length; /* our length, not actual part of the hdr */
+ /* allows easier parsing for fw_cfg clients */
+ char sig[4]; /* ACPI signature (4 ASCII characters) */
+ uint32_t length; /* Length of table, in bytes, including header */
+ uint8_t revision; /* ACPI Specification minor version # */
+ uint8_t checksum; /* To make sum of entire table == 0 */
+ char oem_id[6]; /* OEM identification */
+ char oem_table_id[8]; /* OEM table identification */
+ uint32_t oem_revision; /* OEM revision number */
+ char asl_compiler_id[4]; /* ASL compiler vendor ID */
+ uint32_t asl_compiler_revision; /* ASL compiler revision number */
+} QEMU_PACKED;
+
+typedef struct acpi_table_header acpi_table_header;
+
#endif /* !QEMU_HW_ACPI_H */
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 2c994b3..d25e9a5 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -355,6 +355,7 @@ Aml *aml_derefof(Aml *arg);
Aml *aml_sizeof(Aml *arg);
Aml *aml_concatenate(Aml *source1, Aml *source2, Aml *target);
+void build_append_int_noprefix(GArray *table, uint64_t value, int size);
void
build_header(GArray *linker, GArray *table_data,
AcpiTableHeader *h, const char *sig, int len, uint8_t rev,
--
2.1.4
