PATCH: Add ACPI IVHD_EXT structure to acpireg.h

[Jordan Hargrave]

This patch adds a couple of entries for AMD IOMMU structure definitions in ACPI

Index: acpireg.h
===================================================================
RCS file: /cvs/src/sys/dev/acpi/acpireg.h,v
retrieving revision 1.45
diff -u -p -r1.45 acpireg.h
--- acpireg.h   28 Aug 2019 22:39:09 -0000      1.45
+++ acpireg.h   15 Sep 2020 06:29:50 -0000
@@ -623,6 +623,9 @@ struct acpi_ivmd {
 struct acpi_ivhd {
        uint8_t         type;
        uint8_t         flags;
+#define IVHD_PPRSUP            (1L << 7)
+#define IVHD_PREFSUP           (1L << 6)
+#define IVHD_COHERENT          (1L << 5)
 #define IVHD_IOTLB             (1L << 4)
 #define IVHD_ISOC              (1L << 3)
 #define IVHD_RESPASSPW         (1L << 2)
@@ -638,13 +641,28 @@ struct acpi_ivhd {
 #define IVHD_UNITID_MASK       0x1F
 #define IVHD_MSINUM_SHIFT      0
 #define IVHD_MSINUM_MASK       0x1F
-       uint32_t        reserved;
+       uint32_t        feature;
+} __packed;
+
+struct acpi_ivhd_ext {
+       uint8_t         type;
+       uint8_t         flags;
+       uint16_t        length;
+       uint16_t        devid;
+       uint16_t        cap;
+       uint64_t        address;
+       uint16_t        segment;
+       uint16_t        info;
+       uint32_t        attrib;
+       uint64_t        efr;
+       uint8_t         reserved[8];
 } __packed;
 
 union acpi_ivrs_entry {
        struct {
                uint8_t         type;
 #define IVRS_IVHD                      0x10
+#define IVRS_IVHD_EXT                  0x11
 #define IVRS_IVMD_ALL                  0x20
 #define IVRS_IVMD_SPECIFIED            0x21
 #define IVRS_IVMD_RANGE                        0x22
@@ -652,6 +670,7 @@ union acpi_ivrs_entry {
                uint16_t        length;
        } __packed;
        struct acpi_ivhd        ivhd;
+       struct acpi_ivhd_ext    ivhd_ext;
        struct acpi_ivmd        ivmd;
 } __packed;