On Mon, Oct 17, 2016 at 02:31:05PM +0200, Eric Auger wrote:
> From: Prem Mallappa
>
> ACPI Spec 6.0 introduces IO Remapping Table Structure. This patch
> introduces the definitions required to describe the IO relationship
> between the PCIe root complex and the ITS.
>
> This conforms to:
> "IO Remapping Table System Software on ARM Platforms",
> Document number: ARM DEN 0049B, October 2015.
>
> Signed-off-by: Prem Mallappa
> Signed-off-by: Eric Auger
>
> ---
> v2 -> v3:
> - removed backlash at ACPI_IORT_NODE_HEADER_DEF last line
>
> v1 -> v2:
> - took into account Drew's comments:
> cleanup comments, remove most defines, add ACPI_IORT_NODE_HEADER_DEF
> ---
> include/hw/acpi/acpi-defs.h | 68
> +
> 1 file changed, 68 insertions(+)
>
> diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
> index 9c1b7cb..90a5353 100644
> --- a/include/hw/acpi/acpi-defs.h
> +++ b/include/hw/acpi/acpi-defs.h
> @@ -609,4 +609,72 @@ typedef struct AcpiDmarHardwareUnit AcpiDmarHardwareUnit;
> /* Masks for Flags field above */
> #define ACPI_DMAR_INCLUDE_PCI_ALL 1
>
> +/*
> + * Input Output Remapping Table (IORT)
> + * Conforms to "IO Remapping Table System Software on ARM Platforms",
> + * Document number: ARM DEN 0049B, October 2015
> + */
> +
> +struct AcpiIortTable {
> +ACPI_TABLE_HEADER_DEF /* ACPI common table header */
> +uint32_t node_count;
> +uint32_t node_offset;
> +uint32_t reserved;
> +} QEMU_PACKED;
> +typedef struct AcpiIortTable AcpiIortTable;
> +
> +/*
> + * IORT node types
> + */
> +
> +#define ACPI_IORT_NODE_HEADER_DEF /* Node format common fields */ \
> +uint8_t type; \
> +uint16_t length;\
> +uint8_t revision; \
> +uint32_t reserved; \
> +uint32_t mapping_count; \
> +uint32_t mapping_offset;
> +
> +/* Values for node Type above */
> +enum {
> +ACPI_IORT_NODE_ITS_GROUP = 0x00,
> +ACPI_IORT_NODE_NAMED_COMPONENT = 0x01,
> +ACPI_IORT_NODE_PCI_ROOT_COMPLEX = 0x02,
> +ACPI_IORT_NODE_SMMU = 0x03,
> +ACPI_IORT_NODE_SMMU_V3 = 0x04
> +};
> +
> +struct AcpiIortIdMapping {
> +uint32_t input_base;
> +uint32_t id_count;
> +uint32_t output_base;
> +uint32_t output_reference;
> +uint32_t flags;
> +} QEMU_PACKED;
> +typedef struct AcpiIortIdMapping AcpiIortIdMapping;
> +
> +struct AcpiIortMemoryAccess {
> +uint32_t cache_coherency;
> +uint8_t hints;
> +uint16_t reserved;
> +uint8_t memory_flags;
> +} QEMU_PACKED;
> +typedef struct AcpiIortMemoryAccess AcpiIortMemoryAccess;
> +
> +struct AcpiIortItsGroup {
> +ACPI_IORT_NODE_HEADER_DEF
> +uint32_t its_count;
> +uint32_t identifiers[0];
> +} QEMU_PACKED;
> +typedef struct AcpiIortItsGroup AcpiIortItsGroup;
> +
> +struct AcpiIortRC {
> +ACPI_IORT_NODE_HEADER_DEF
> +AcpiIortMemoryAccess memory_properties;
> +uint32_t ats_attribute;
> +uint32_t pci_segment_number;
> +AcpiIortIdMapping id_mapping_array[0];
> +} QEMU_PACKED;
> +typedef struct AcpiIortRC AcpiIortRC;
> +
> #endif
> --
> 2.5.5
>
>
Reviewed-by: Andrew Jones
