Changeset 86119 in vbox for trunk/include/VBox

Timestamp:

Sep 14, 2020 9:15:29 AM (5 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

140353

Message:

AMD IOMMU: bugref:9654 Bits.

File:

• trunk/include/VBox/iommu-amd.h (modified) (4 diffs)

trunk/include/VBox/iommu-amd.h

@@ -453 +453 @@
 /** @} */
 
-/**
- * Gets the device table length (in bytes) given the size field.
- */
-#define IOMMU_GET_DEV_TAB_LEN(a_DevTab)     (((a_DevTab.n.u9Size) + 1) << X86_PAGE_4K_SHIFT)
+/** Gets the device table length (in bytes) given the device table pointer. */
+#define IOMMU_GET_DEV_TAB_LEN(a_pDevTab)            (((a_pDevTab)->n.u9Size + 1) << X86_PAGE_4K_SHIFT)
 
 /**
@@ -548 +546 @@
 #define IOMMU_DTE_QWORD_1_FEAT_GTSUP_MASK       UINT64_C(0x00000000ffff0000)
 
-/* Mask of valid bits for GIoSup (Guest I/O Protection Support) feature (bit 54). */
+/** Mask of valid bits for GIoSup (Guest I/O Protection Support) feature (bit 54). */
 #define IOMMU_DTE_QWORD_0_FEAT_GIOSUP_MASK      UINT64_C(0x0040000000000000)
 
-/* Mask of valid DTE feature bits. */
+/** Mask of valid DTE feature bits. */
 #define IOMMU_DTE_QWORD_0_FEAT_MASK             (  IOMMU_DTE_QWORD_0_FEAT_EPHSUP_MASK \
                                                  | IOMMU_DTE_QWORD_0_FEAT_GTSUP_MASK  \
@@ -557 +555 @@
 #define IOMMU_DTE_QWORD_1_FEAT_MASK             (IOMMU_DTE_QWORD_0_FEAT_GIOSUP_MASK)
 
-/* Mask of all valid DTE bits (including all feature bits). */
+/** Mask of all valid DTE bits (including all feature bits). */
 #define IOMMU_DTE_QWORD_0_VALID_MASK            UINT64_C(0x7fffffffffffff83)
 #define IOMMU_DTE_QWORD_1_VALID_MASK            UINT64_C(0xfffffbffffffffff)
@@ -563 +561 @@
 #define IOMMU_DTE_QWORD_3_VALID_MASK            UINT64_C(0xffc0000000000000)
 
-/* Mask of the interrupt table root pointer. */
+/** Mask of the interrupt table root pointer. */
 #define IOMMU_DTE_IRTE_ROOT_PTR_MASK            UINT64_C(0x000fffffffffffc0)
-/* Number of bits to shift to get the interrupt root table pointer at
+/** Number of bits to shift to get the interrupt root table pointer at
    qword 2 (qword 0 being the first one) - 128-byte aligned. */
 #define IOMMU_DTE_IRTE_ROOT_PTR_SHIFT           6
 
+/** Maximum encoded IRTE length (exclusive). */
+#define IOMMU_DTE_INTR_TAB_LEN_MAX              12
+/** Gets the interrupt table entries (in bytes) given the DTE pointer. */
+#define IOMMU_GET_INTR_TAB_ENTRIES(a_pDte)      ((1U << (a_pDte)->n.u4IntrTableLength))
+/** Gets the interrupt table length (in bytes) given the DTE pointer. */
+#define IOMMU_GET_INTR_TAB_LEN(a_pDte)          (IOMMU_GET_INTR_TAB_ENTRIES(a_pDte) << IOMMU_IRTE_SIZE_SHIFT)
 
 /**